Ductless chemical fume hoods maintain the same flow rates as standard fume hoods, but they recirculate air from the workstation through high-quality filters and back into the work environment. Aura™ 42, Aura™ 250 and Aura™ 550 Ductless Fume Hood: Gas Phase Carbon: Each for $1,023. Amperage. Fume hoods remove the fumes as air flows into the hood and then out via the laboratory exhaust system. Light duty enclosures for nuisance vapors, advanced hood systems for hazardous toxic fumes or highly specialized. This is a common comment. The self-contained assembly maximizes filter. 9. Fume containment and airflow uniformity meet the requirements of ASHRAE 110‐1995, BS 7258, EN 14175‐3 and. The Solution Series Solution Work Station laboratory fume hood’s design allows for back-to-back and side-by-side configurations for flexibility in designing undergraduate teaching and learning labs. Sentry Air Systems’ OSHA compliant Portable Spray Booths are built with stringent quality control measures and superior craftsmanship. Have a second person support the weight of the range hood while you use a screwdriver to loosen the. Fume hoods remove the fumes as air flows into the hood and then out via the laboratory exhaust system. This type of fume hood utilizes carbon or HEPA filtration to protect laboratory personnel from toxic chemical fumes, odors, and particles. Work Practice Controls. Cleatech Ductless Exhaust Fume Hood, 32″ Portable , Clear Polycarbonate. 0656 F/800. Chemistry Fume Hoods can also help protect from other hazards such as chemical or thermal burns and chemical adsorption. Negative pressure flow pulls particulates away from the handler while drawing air into the work surface and through the Multiplex™ filter. Those also comply with SEFA-1 standards. Typical Fume Hood Design. These enclosures serve as barriers against exposure that could be detrimental to tests or health. • Energy Efficient. This ductless design overcomes the two main objections of laminar flow. Warnings are included that manyDuctless Fume Hoods. It has several advantages over duct fume hoods, such as a plug-and-play feature, mobility, hassle-free installation, and no lab work. Your Protector Laboratory Fume Hood is designed to protect you. Benchtop fume hood, depending upon your application, is an economical and compact option to the static fume hoods. Disclaimer: The end user is ultimately responsible for conforming to all applicable exhaust ventilation regulations. Fume hoods and fume extractors provide localized ventilation at the contaminant source. The Purair Advanced Series ductless fume cupboards are available in 7 standard sizes in metal or polypropylene construction. By filtering the air, ductless fume. Attach the supports together, creating a box frame. Classroom Ductless Fume Hoods. A vapor adsorbing ductless fume hood is a self-contained enclosure that uses carbon molecular filters to trap toxic gases and odors from acids, organics, aldehydes, and amines. Costs for a traditional fume hood set up include the hood, the remote blower, and the cost of continually exhausting air out of the laboratory while forcing make-up air in. Amazon. Airfiltronix – Mfr # 200A G24 – Item # EW-33705-16. When it comes to ductwork, it’s a numbers game. For additional information, please contact Sentry Air Systems, Inc. $2,421. The more powerful the hood, the larger the duct. 5 in. Explore Options. Ductless Fume Hoods. This is a self contained ductless hood unit, equipped with integral carbon filter, vapor proof light, vertical sash and controls, and completely molded…AireStream Laboratory Fume Hoods. Make sure the damper is facing the right direction. Connect the two by drawing a line from point 1 to 2. 5″ to a full 72″ worktop with a hood opening width. Height (Metric) 149. Step 1: Install the Interior Damper. The Ascent™ Max Ductless Fume Hood with Secondary HEPA filter has an efficiency of 99. The Protector XL. Our ductless fume hoods provide energy savings, safety and convenience and are available in a variety of configurations, including mobile fume hoods and polypropylene fume hoods. • All hoods shall be equipped with a flow indicator, flow alarm or face velocity monitor • Ductless hoods should only be used with non-hazardous material. Erlab are experts in air filtration, protecting the safety of lab personnel for over 50+ years. Name and Email are required. 00. If you prefer, you may contact us by calling 800-799-4609, or e-mail us at sales@sentryair. Air Science ® Laminar Flow Hoods are a series of high efficiency products designed to protect equipment and other contents of the work zone from particulates, for applications sensitive to such contamination. Operators should consider fume inhalation risks and utilize respiratory engineering controls, such as a ductless fume hood or exhaust hood, to. Biosafety Cabinets (26) Clean Benches (1) 1. Height (English) Sash Opening. Fume hoods are designed to provide personnel protection from toxic or volatile chemicals by continuously shifting airflow away from the user and to the work area. Vent Install Type. The final tip concerns the duct size. 9 cm. Draw a. 00. View On Amazon View On Walmart View On Lowe's. Weight (Metric) 115 kg. Most fume hoods are box-like structures with a vertical (most. Ductless Fume Hoods (portable fume hood, ductless fume cabinet) provide protection to both laboratory personnel and the environment from toxic fumes and are quickly becoming a viable alternative to conventional fume hoods. Fume hoods provide the necessary protection for both the working materials and personnel. That means knowing precisely what type of work will be performed in the fume hood and making the choice between constant air volume and variable air volume,. Consult local, state and federal agencies regarding the suitability of your application prior to venting fumes to the environment. These type of fume hoods filter out chemical fumes and recycle air directly back to the laboratory. Laboratory fume hoods require an exhaust and make-up air system to effectively remove contaminants from the work zone. 24” (61 cm) deep clear interior. Height (Metric) 149. Ducted fume hood adalah jenis fume hood yang banyak digunakan di laboratorium, fume hood jenis ini bisa langsung dipasang di ruangan laboratorium dengan melubangi dinding laboratorium untuk pemasangan ducting. The first step is to cut the materials to the required size. Building a Small Fume Hood for Stinky Projects: My wife Jennifer makes cast-resin jewelry1. Fume hoods are built with a safety glass sash that provides a physical barrier, however, it is still glass. The look and feel of a traditional fume hood, without the associated installation or energy costs; More Info Get Quote. Web with filtered fume hoods, chemicals bind to the carbon in the filters and. These ductless containment hoods are available in 24″, 32″, 48″, 60″, 72. EHS and several professional safety and engineering organizations do not recommend the use of ductless fume hoods for several reasons. The fume hood begins this process by pulling room air into and through the fume. Harmful and unpleasant chemical fumes are removed from the controlled environment to facilitate a safe and pleasant work environment using an external fan installed on the roof or on an external wall. Additionally, all Air Science ® products are manufactured under an ISO 9001 Quality Management System. or 0. Temperature and humidity sensors, can detect indoor temperature and humidity. Ductless fume hoods must have prominently posted signage informing operators and maintenance personnel on the allowable chemicals used in the hood, type and limitations of filters in place, filter change schedule, and a notice that the hood recirculates air in the room. This is accomplished by drawing contaminates within the hood’s work area away from the user, so that inhalation and contact are minimized. The Protector XL. 0677 p:3 Product Features Ductless Fume oods 10 10XL 15 20 25 30 40 PRODUCT FEATURES: A. Thus, in these cases, using ducted fume hoods is the best option as they assist withThe Universal Fume Hood is designed for light to medium duty fume removal, and offers such features as a sturdy dual wall construction, and a fully vertical sliding sash. ตู้ดูดควันแบบไร้ท่อ (ductless fume. Ductless Fume Hoods. Sort By. The harmful fumes or vapors. All HEMCO fume hoods are constructed of a highly corrosion resistant composite resin designed to outlast standard painted metal fume hoods. 4. A system of endless benefits, providing flawless protection throughout the lab and beyond. , due to equipment blocking baffles), indicate as such on the Survey Form and communicate to the Laboratory Manager for correction prior to any retesting. As others have stated you will need to retrofit your hood to use a scrubbing system. Products. Draw a. Add a ductless range hood for the best combo of focused and supplemental ventilation. Ductless hoods are independent systems which do. These devices work by using a fan to draw air into a chamber, through one or more filters, and back into the laboratory. Ductless Fume Hood. 21221 FM 529 Rd, Cypress, TX 77433 1. Functionality and durability in mind, our fume hoods are designed for the harshest laboratory environment today. Please Inquire. The system has a MAX 375 CFM rating and a quiet 5. Purchaser of a DFH can be a Project Manager, an Area Manager, a PI, a department administrator, or any. com. Browse a wide range of PCR enclosures and laminar flow hoods designed to prevent sample contamination and. Range hoods are the most effective way to do this, if your range hood actually moves air out of the kitchen. 00. A ductless enclosure is a safety device used to protect laboratory workers when handling chemicals that pose an inhalation risk. Ductless Fume Hoods, also known as Ductless Containment Hoods or Fume Hoods, are self-contained workstations that help to protect the operator's breathing zone from. 9. Ductless Fume Hood • Ascent™ Max Ductless Fume Hoods and Ascent™ Opti Ductless Fume Hoods Esco Nanocarb™ Filters Esco’s Nanocarb™ •activated carbon filters are constructed in order to ensure maxi-mum filter efficiency, retention capacity and operator protection. . #6. ADVANTAGE. The exhaust fan is typically stationed at the top of the building and pulls air through the duct work connected to the hood and exhausts it into the atmosphere. These fume cupboards don’t have a vent, but have a large filter unit mounted on top in front of the fan. 2K views 6 years ago #EscoLifesciencesGroup. By capturing toxic molecules and particles evaporated in the hood, these filters allow for a safer. 168. Esco ductless fume hoods also offer energy savings, convenience, and mobility. Once the air is drawn in, it moves through a filter called the pre-filter. Aeromech make Fume Exhaust Hood. The fume hood encloses a work bench area that has a fan unit at the top. smoke, fume), while activated carbon is designed to better filter odors (i. 5m, with PP drip-cup provision: Accessories. 39 products. Add to Compare. Broan-NuTone has the Under-Cabinet Range Hoods, Chimney Wall-Mount Range Hoods, Island Range Hoods, Downdraft Ventilation Systems, Outdoor and Built-In Range Hoods for. Many units are portable and may be moved from one location to the next with minimal down-time and without filter changes. Laboratories that handle light to moderate. Ductless fume hoods, or filtered fume hoods, are self-contained, filtered enclosures that remove hazardous fumes, vapors and particulates from the immediate environment. Mount at least 24-30 inches above the cooktop for safety and optimal fume capture. The fume hood was a simple build from inexpensive mat. A ductless fume hood can be placed on a bench and connected to an electrical supply. While a ducted range hood is the first choice for most chefs and homeowners, both ducted and ductless hoods have their pros and cons. No installation costs since no ductwork is required. 08 - $5,031. Because the air that is pulled into the hood is not filtered, fume hoods only offer protection to its users and no protection to the. Esco Lifesciences offers world-class ducted fume hoods to provide maximum safety and comfort to laboratory. Description. Get a Quote. Downward airflow in the chamber protects the operator. Has small graphics on the touchscreen that may be difficult for some to read. Help keep your lab employees safe with a ductless fume hood and fume hood filters and other accessories from Grainger. Sentry Air Systems’ OSHA compliant Portable Spray Booths are built with stringent quality control measures and superior craftsmanship. The fume hood design, and any additional features, is dependent on what types of. A very rudimentary comparison is that HEPA is designed to better filter particles (i. Product Specs. Canadian Scientific Lab Systems’ fume hoods and fume extraction systems adhere to the current standards as outlined by SEFA & UL1805. Ducted vs Ductless Range Hoods. e. Tim Campbell: Ducted fume hoods are making your chemical exposure the outside world’s problem by dispersing it to the outside environment. This gives decent airflow to remove the dangerous fumes from the work area. 00 $ 8,940. These exhaust hoods are fitted with fans that force the air in a specific direction where it has to pass through several types of carbon. Per ASHRAE 110-2016 a properly working fume hood should have a face velocity between 0. 5" / 750mm Nominal Width, FSA Filter Saturation Alarm and AUTOCAL Airflow Display, Requires Minimum One ASTM-XXX Main Filter P10-XT-A-ADVP Purair®ADVANCED Ductless Fume Hood, 29. Filter Price. The Protector® Echo™ Filtered Fume Hood delivers safety, energy savings and adaptability to ever. October 28, 2022 Jordan Advertisement When working with potentially dangerous chemicals, it is important to have a fume hood in your home laboratory. 20 A. Contaminated air passes through the scrubber’s water-washed contact media before being exhausted. Carbon and HEPA Filter Replacement and Disposal: Safety First. For bench top, counter tops or cabinetry & casework. Reply. Labconco Ductless Fume Hood Paramount Style Labconco Paramount Ductless Fume Hood used, Labconco Ductless Fume Hood Paramount. Modest chemical volumes should be used, around 500 mls or less per chemical. A benefit of ductless fume hoods is that they are mobile, easy to install since they require no ductwork, and can be plugged into a 120 volt or 240 volt outlet. Is a fume hood the same. Ascent™ Max Ductless Fume Hood with Secondary Backup HEPA Filter, 5ft/1. Full membership to the IDM is for researchers who are fully committed to conducting their research in the IDM preferably accommodated in the IDM complex for 5. When deciding if you need a. . The ductless fume hood is self-contained and does not require venting to the outside. 800. com. 33 CAD / Each. This means that unlike ducted fumeErlab SMART391RT Resin Work Surface for 391 Smart Ductless Fume Hood. SEE IT. Ductless Fume Hoods- Portable. Advanced. A fume hood is a ventilated enclosure used to control exposure to hazardous or odorous chemicals. Users need to be able to rely on their fume hood as a primary containment device to protect them from the hazards within. Ductless Exhaust Fume Hood -- 2900-20. There are so many different compounds, 5-15mg in vials. ) With nothing to catch grease splatters and vent smoke, steam, and cooking smells, renters often end up fighting sticky, filmy cabinets and a kitchen that still smells like fish two days after cooking. The advent of ductless fume hoods (also known as filtered fume hoods) around 50 years ago was a significant milestone but, since then, advances in filtration technology, safety and flexibility have enabled them to adapt fully to the changing demands and safety standards of the modern laboratory. It also features a double-hinged sash with arm ports that provides good working. Chemcap hoods are ductless with recirculatory filtration, they incorporate efficient ‘Chemcap’ carbon filters for fume removal and HEPA filters for particulates. I've tested the performance of a few and have seen data showing containment performance down to 20nanograms/m3 for dispensing of powders at much larger scales than you are talking about. List: $189. Over time, filters become saturated with the chemicals they’re designed to intercept. Because the status of the chemical fume hood can change anytime, continuous air flow indicators are recommended. Introduction Step 1: Precutting/Sizing The Materials. A ducted fume hood that requires 500 CFM could cost as much as $4,000 USD per year to operate. The hood is constructed of chemical-resistant epoxy-coated steel for added mechanical strength. SEE IT. Or ask about. 4. Check out this diverse supply of fume hoods with and without filters for acid gases and particulates, as well as replacement and accessory items. Ductless fume hoods are designed to protect personnel by filtering out dangerous fumes and vapors so that air can be safely recycled back into the work space in an energy-efficient way. This is Labconco’s most flexible fume hood. Then mount the blower motor with a fan guard on top of the box. Giving a high protection performance and biological safety, the ductless hood protects the operator from generated gases. The Ductless Fume Cabinet can also be supplied with a modular stand and castors. Improved filter clamping eliminates by-pass leakage. Certified to ASHRAE 110, EN 14175-3, AFNOR NF X 15-203, BS 7989, BS 7258. Best Splurge. The ductless hood’s scope of use is limited to the capacity and capability of the filtration system. Air Science Ductless Fume Hoods, PCR Laminar Flow Cabinets, Laminar Flow Hoods, Forensic Lab Equipment, and Biosafety Cabinets. Dimensions (L x W x H) 640 x 900 x 1350 mm. Have lots of options for services including gas, water, air, nitrogen, vacuum and more. These can be gases, vapours, aerosols or particulates (dust). 63CAD / Each. 00 - $3,415. Cole-Parmer FHD-200 Carbon Filter for Acids and Sulfur RK-78900-14. Fisherbrand™ Walk-In Standard Chemical Fume Hoods are innovative and purpose driven products for the research and healthcare industries. . $294. 3 microns. Our ductless fume hoods are safe and convenient to. the ductless fume hood may be applied as a Class I Biological Safety Cabinet. 1 and A. Convertible hoods come with a recirculating kit or charcoal filters to convert the hood to ductless. If you prefer, you may contact us by calling 800-799-4609, or e-mail us at [email protected] Hood Design. Quiet efficient operation powered by 530 cfm blower. We manufacture a complete series of high efficiency ductless fume cupboards, ductless workstations, laboratory filtration products, and custom enclosures. Floor-mounted (walk-in) hoods from 48” to 144” wide and up to 96” deep. Cut a window in your last panel. 51 m/s). Ductless Enclosures & Fume Hoods . Explore Options. Interesting and original video coming next weekend!. A chemical fume hood is a ventilated enclosure used to trap and exhaust vapors, gases, and nanoparticles. Narrow Down Where. • A low airflow alarm warns of insufficient face velocity. * The case is made of 8mmPP plate, with good finish and corrosion resistance. Slotted rear baffle for even plenum balance. conducted for any ductless fume hood. Remove the motor housing from the vent by taking out the screws. Each laboratory should be provided with efficient fume hoods, equipped with a sink for the washing of apparatus used for handling toxic materials. Airflow costs an estimated $8 USD per cubic foot per minute (CFM) on average, with a range from $5 to $13 USD depending on the climate of the lab’s location. Ductless fume hood means a non-ducted fume hood utilized for the safe removal of low hazard chemical or other nuisance vapors and/or fumes, and is often referred to as a “green” fume hood, and referred to in this document as DFH. The blower inside sucks in air from the room through the front opening, takes the gasses or fumes inside the box, and passes them through the filter, finally throwing the filtered air into the room again. Energy saving LED lighting. ago You should be fine with any sort of airflow. 68 - $480. The carbon filter is sized to fit the specified product model number and configured to optimize airflow across 100% of the filter surface area. These enclosures are equipped with smart filtration technology that is specific to the type of chemicals handled. Purity is the truest measure of effectiveness. Dynaflow Ductless Fume Hood is a logical option because: Portability: The cupboard does not require connection to extraction systems. A sale on an electric leaf blower inspired a Saturday afternoon of hacking. 5 Year Warranty on all UL 1805 UniFlow Fume Hoods. Here I show how I built my home-made chemical fume hood for use in gold recovery from electronic scrap. Selain itu, fungsi fume hood adalah untuk mencegah pelepasan zat berbahaya ke dalam ruangan. 120 6th Street Fort Myers, FL 33907 T 239-489-0024 Toll Free 800-306-0656 F 800-306-0677 5 USER OPERATION MANUAL: Purair Basic Series I . Obtain information about ductless fume hoods through communication with various professionals 3. 7 in. If you prefer, you may contact us by calling 800-799-4609, or e-mail us at sales@sentryair. Actually, it’s just the opposite. The mobile fume extractor / fume exhauster is an air purification system which can provide the partial high pure environment. Item Code Model Code Description; Main Carbon Filters for 2 ft models: 5080003: CFA-11: Code. Ductless fume cabinets provide additional safe ventilated space when you. The treated air is then returned to the laboratory. In ordinary times, keeping the work area and. Items 1 - 12 of 23. Ductless fume hoods are equipped with a fan to pull in contaminants. Next, cut a 3/4 inch thick piece of plywood to the overall width and length of. They are available with a variety of HEPA and carbon filters with convenient front access for replacement and an exhaust point for connecting a second filter or an external exhaust. Learn about the differences between each type of fume hood design and the various safety standards that apply in this new video from Erlab & Lab Manager. Cut two support beams to this width. Known for its plug-and-play feature and mobility, Ductless Fume Hood guarantees a hassle-free installation and no lab work interruption. 99% lower monthly HV/AC cost than traditional ducted hoods. Add to Cart 15-338-118 View Documents View Product Certificates. This gives decent airflow to remove the dangerous fumes from the work area. Most fume hoods for industrial purposes are ducted. With a 400 CFM range hood, install 4” duct. The ductless fume hoods from METHOD provide the user with a secured workspace for the repetitive manipulations of small chemicals quantities. Hi all, so I just picked up a good deal on a moderate airflow inline fan, and an activated carbon filter, with two uses in mind, one being for airbrushing laquers, and cleaning my equipment with solvents, but also for use as a ductless fume hood for basic chemistry stuff when it's too cold outside to move stuff out there, in this case, my main thought is performing distillations of acetone so. BUEZ1 30 in. Our ductless fume hoods, or fume cupboards, are made in America at our state-of-the-art manufacturing facility, ISO 9001 and ISO 14001 certified for compliance with stringent. *** 96″ ductless hoods include three 1200 CFM exhaust fan units and required three sets of. Protects the environment by trapping wider variety of chemicals than other carbon filtration methods. For easier service, a minimum clearance of 50 cm is recommended. If there are opposing walls or obstructions, the. Warnings are included that many Ductless Fume Hoods. Compare this item. Fume Box ductless enclosures are available in 3 standard models, in metal or polypropylene construction, totaling 6 standard models. The design of this hood is beautiful and functional, and the buttonless display. Conduct a literature review of ductless fume hoods in engineering and industrial hygiene journalsDucted Fume Hood. . Protects the operator from fume and (with added HEPA/ULPA filter) particle hazards. The higher the CFM, the larger the duct. Unlike traditional fume hoods, they require no ducting so they can be moved from lab to. Myth 1: Ductless hoods only remove a small number of contaminants. Now that you’ve got. Paramount Ductless Enclosures are self-contained work stations, also known as ductless fume hoods, that use carbon filters to rid the laboratory of annoying or unsafe concentrations of organic solvents, formaldehyde, acid gases, ammonia, or radioisotopes. Window: A strategically placed front cover window shows the installed filter part number and installation date for convenience. You can consider it one of the best cheap soldering fume extractors that any lab can have. Have more light with the 1400 Lux LED light with easy operator light and fan adjustments with the AirHawk. heated or cooled) air is drawn from the lab space into the fume hood and then. Help keep your lab employees safe with a ductless fume hood and fume hood filters and other accessories from Grainger. The Air Science filters are easy to access, easy to change. They are a conventional fume extraction unit designed so that airborne contaminants are contained in the enclosure prevented from entering the room or laboratory by means of a protective air barrier between the user and the materials placed. Fume hood should u. DIY - Poor Mans Fume Hood - No Pics. Because the status of the chemical fume hood can change anytime, continuous air flow indicators are recommended. Labconco Protector Fume Hoods include the XStream, the most energy-efficient ducted fume hood design, as well as other high performance ducted fume hoods in our Premier and XL lines. DUCTLESS FUME HOOD FEATURES & BENEFITS • DFH are available in 3 standard sizes. Ductless fume hoods. HEMCO offers a complete line of UniFlow laboratory fume hoods. The operating cost is significantly less for ductless units. 38 products. Fume hoods are often the most used piece of equipment in research laboratories and frequently shared by lab personnel. SEEDS project: ductless fume hoods research University of British Columbia 6 1. Locate and Mark the Vent Holes. Hauslane WM-538 Wall Mount. Use for locations where outside ventilation cannot be achieved. AirClean Systems manufactures ductless fume hoods, chemical workstations, and enclosure cabinets that protect the operator from exposure to toxic vapors, gases, air fumes, and particulate. We like the Broan-NuTone BCSQ130SS Three-Speed Glacier ductless range hood 30 inch as our top pick. Protects the operator from fume and particle hazards. Ductless fume hoods or fume cupboards are often used in laboratories to capture and remove hazardous substances from the air which are produced during certain laboratory applications. Unrestricted front and side access permits applications requiring complex user involvement. Bench top fume hoods are ideal for facilities, laboratories, and work-spaces with a smaller footprint and can be easily transported on and off-site. Our ductless fume hoods provide energy savings, safety and convenience and are available in a variety of configurations, including mobile fume hoods and polypropylene fume hoods. A ducted fume hood might be the better choice if your lab handles a wide range of chemicals, especially those generating hazardous gasses. Power: 250 W. Ductless/filtered fume hoods offer a targeted solution for laboratory managers’ processing needs. Protecting People and Processes. This equipment is designed to provide protection from toxic chemical fumes and is essential in most laboratories as it is the primary method of exposure control. Fume Hood Design. Hauslane Chef Series WM-739 30" Wall Mount Range Hood. We have three types of fume extraction system: Ducted Fume Cupboard, Ductless Fume Hood, and Fume Extractor Arms. The most common type of fume hood, bench top units are installed on top of lower base units and most typical cabinets (base cabinets). Conveniently added fume elimination to your lab. Request for Quote. Ductless Fume Hood. $5,348. Occupational Health and Safety • 2. Ductless hoods pass air from the hood interior through an absorption filter and then discharge the air into the laboratory. Brand: Chemietron. If there are opposing fume hoods, the distance from the aperture should be more than 3 m. Fume hoods are used for ventilation of enclosed workspaces to isolate samples from the user or the environment. Fume hoods function by maintaining a relatively negative interior pressure while continuously drawing air through the sash opening, which prevents contaminants from escaping. . Ductless Fume Hoods- Portable. A Ductless fume hood also known as a portable fume hood, is great for use in existing buildings where the ductwork is inaccessible, where mobility is necessary or cost is an issue. METHOD fume hoods have certain defining features that set them apart from others. its all about airflow! Not only do you HAVE to have it. Mushroom Clean Air Box DIY Portable Laminar Flow Hood Mycology Fume Hood Propagation Station Monotub - White. Fume hoods should not be installed face to face or opposite a biological safety cabinet unless the distance between them is at least 9’ feet.