Defender Series Benchtop Fume Hood

The Defender Series chemical fume hood has been the cornerstone of our product offering for several years. With its sturdy 16-gauge superstructure steel pan designed framework and removable side panels for easy access to plumbing and electrical components, it’s one of the strongest and most durable chemical fume hoods on the market. Its cost-efficient modular design allows for precision factory assembly and easy field retrofitting. Electrical and plumbing controls are mounted on the front-facing post surface, and its full airfoil sash perimeter provides excellent airflow. The Defender comes equipped with a long list of standard features, making it an exceptional value and our most popular model.

Color options

Standard Features

  • Stainless steel sash frame, sash guide, finger pull and airfoil
  • Three-piece baffle system with adjustable upper and lower dampers
  • High-flow louvered front panel providing linear, non-turbulent transition between face opening and bypass air.
  • LED lighting for improved work space visibility
  • Sash pulley system utilizing four 2 1/2″-diameter pulley for one finger sash operation.
  • Available in CAV and VAV styles
  • Flush interior lining reduces leakage and eddy currents, contains interior air flow, and simplifies the cleaning process
  • Pre-wired and pre-plumbed electrical and service outlets

What are the main features, elements, or parts of this type of fume hood?

Built off our 16 gauge galvanized superstructure and chemical and fire resistant poly resin liner. It has the flexibility to be easily customized with up to 10 plumbing services and 6 electrical services. The flexibility of the steel pan construction allows for easy sizing customization for application specific projects. It’s stamped louver front panel allows for smooth bypass airflow.

What testing or standards is it built under?


What materials is it made out of?

16 gauge galvanized, 18 gauge cold rolled steel makes up a large portion of the hood structure and external materials. Chemical resistant poly resin is used for most applications but stainless steel is used for radioisotope applications and poly resin or pvc can be used for hydrochloric acids. The airfoil, sash and sash guides are made from stainless steel 304 with #4 finish. All hardware fasteners are made of stainless steel or corrosion resistant PVC (depending on application).

What sizes are available?

We offer standard sizes ranging from 36” wide up to 96” wide. This benchtop model comes with a standard height of 54” and depth of 34”. Width, height and depths are all customizable if needed to fit the specific application or space.

Add-On Equipment & Accessories

  • Liner material – Standard poly resin liner with optional stainless steel
  • Electrical switches and receptacles. Explosion-proof lighting and fixtures are also available.
  • Remote-controlled plumbing fixtures, with chrome or color-coded outlets. Pre-piped hard copper with soldered joints.
  • Choice of sashes – vertical rising (standard); top-hung horizontal sliding; combination (vertical /horizontal); interlocking vertical (disappearing post)
  • Sash stop
  • Ceiling enclosure
  • Air velocity monitor/alarm
  • Automatic sash closer
  • Countertops – epoxy, phenolic, stainless steel
  • Cabinets – complete line of metal laboratory casework, including hood base, acid storage and flammable storage cabinets
  • Blowers – selected to match hood and ductwork configuration, corrosive or ignitable exhaust fumes

Does a blower come with it? What size is needed?

We can provide a blower at additional cost. We offer blowers to support a wide range of hoods sizes and quantities depending on the HVAC needs of the laboratory.

Is it customizable in any way?

We offer a wide range of options and accessories. Our fume hoods are offered in a wide variety of sizing options so “customization” isn’t usually necessary but it is offered.

What are common accessories or add-ons?


We offer steel casework with a chemical resistant epoxy powder coat finish. These steel cabinets are extremely durable and can be used in almost any laboratory setting. Typically, steel casework is used in “wet” lab environments but as we stated, it’s versatile and can be used in institutional (education), industrial, manufacturing and other laboratory settings. Our casework and benches are offered in either sitting or standing heights.

Lab Benches and Fume Hood Bases

We offer steel tube work benches, lab tables and ADA fume hood base cabinets that we can build to standard or custom sizes based on the need of the customer.


We offer epoxy resin, stainless steel, phenolic and butcher block style work surfaces. Epoxy resin is by far the most common due to its tough durability and its chemical resistance. Wet labs will typically use epoxy resin but you find epoxy surfaces in almost all types of labs. Wood or butcher block surfaces have grown in popularity but lack the durability and chemical resistant properties of epoxy resin. Stainless steel counters are often found in clean room environments and food or cannabis processing. Phenolic is another option we offer and has good chemical resistant qualities but lacks some of the durability epoxy resin offers. It is a more budget friendly option compared to epoxy resin.

Explosion-proof hoods

We offer our hoods with explosion proof lighting, switches and receptacles if the application requires it.

Fume Hood Installation

What fixtures, ductwork or plumbing is needed for this type of fume hood?
Our hoods come with standard duct collar sizing of 9”, 10” or 12” depending on hood size. We offer the following plumbing services standard but can do custom: air argon, carbon dioxide, nitrogen, cold water, oxygen, distilled water, special gas, vacuum, hot/cold water, gas, hot water, hydrogen and steam. Also offered are electrical outlets, LED lighting.

Where does this type of fume hood usually get installed?

These fume hoods are generally installed in a laboratory, manufacturing, quality control/testing, or educational space. It is important to consider location of the fume hood, foot traffic, and entry and exits to the room that they are being installed in to avoid cross drafts or air currents that can negatively impact the performance of the hood.

Does iQ Labs install fume hoods?

We do not install the fume hoods but we do work with partner companies who specialize in installation.

Do you install fixtures or ductwork if needed?

Fume hoods come pre-wired for electrical and pre-plumbed allowing them to be easily installed by an electrician, plumber or appropriately qualified maintenance technician. The fume hood comes with a duct collar installed to allow for easy hookup to the duct work. This is typically performed by an HVAC technician.

Can you install cabinets, tables, workstations, or desktops as well?

We do not do the installation but can connect our customers with qualified installation crews around the country.

What is the lead time?

Lead time on our standard fume hoods is between 2-4 weeks.

Does customization affect this? How much longer does it take?

Yes, customized product lead time is typically between 3-6 weeks.

Fume Hood Use & Safety

What are the usage and safety rules?

Refer to our fume hood safety guide blog post for the most comprehensive answer on this question.

Do you provide any fume hood training or resources?

Every fume hood comes with its installation and care manual giving basic instructions on usage guidelines and preventative maintenance. We offer resources on our website (blog posts) that talk about proper usage of a fume hood, do’s and don’ts, etc.

Do you repair or service fume hoods?

We work with partners in the field if a hood needs to be repaired. Often issues that pop up are basic and can be easily fixed by a maintenance staff member or replacement parts can be provided by iQ Labs and reinstalled by the customer.

Does it need maintenance regularly?

No, our hoods are very low maintenance and only require basic cleaning from time to time depending on frequency and application being used for.

Is there a warranty?

Yes, we offer a 10 year warranty on all our fume hoods.

What does routine upkeep look like?

Our hoods are very low maintenance and only require basic cleaning procedures to maintain them in working order. It’s important after each procedure or test to make sure you wipe down the work surface and clean up any spills. Make sure you wipe down any chemicals that have splashed on to the sash, airfoil, baffles or side walls of the hood to avoid future corrosion or stains.

The baffle system should be removed and cleaned periodically depending on the frequency of use of the hood. This can easily be done by removing the mounting screws and pulling the panels out.

Our hoods come standard with an access panel on each side to access plumbing and electrical fixtures if maintenance is needed. The hoods also come standard with removable exterior side panels making further access to the plumbing and electrical extremely easy.

Sash guide tracks should be periodically cleaned and wiped out if debris starts to build up in them.

Our sash cable and pulley system should not require maintenance. Pulley cables are coated stainless steel and pulley wheels are made from stainless steel ball bearings that are internally greased. If the sash needs to be removed, that can be done by sliding the hood away from the wall, disconnecting the sash cable weight and sliding the sash out the top of the hood.

Frequently Asked Questions

What are the most common uses for this type of fume hood?

General laboratory functions to eliminate toxic fumes, vapors, and dusts. Chemical fume hoods also provide a safety barrier for the user.

Is it ideal for any specific applications or industries?

The BV Series is ideal for any laboratory setting where toxic fumes, vapors or dusts are being used. This fume hood can be used in a variety of industries including but not limited to research, education, industrial, manufacturing and specialty use. It’s different liner options (poly resin, stainless steel, PVC) give it the versatility to handle several different application specific chemical types. The BV Series is our most versatile and proven design and is perfect for almost any general laboratory setting.

What makes this type different from the other types of fume hoods?

The LA Series is certified as a low flow fume hood being able to operate with face velocity airflow as low as 60fpm. It’s angled front post design and low profile airfoil allow it to produce smooth airflow throughout the enclosure reducing eddy currents preventing hazardous fumes from escaping. It is built off our 16 gauge steel pan construction giving it rigidity while still allowing removable side panels for easy installation and access for maintenance.

How does this type of fume hood work? What is it used for?

The BV Series has been the backbone of our product offering for decades and it’s proven 16 gauge steel pan construction, removable side panels, and forward facing post design allows for a vast array of plumbing and electrical services and the flexibility for customization.

The BV Series features a recessed counterweight system with tilt-lock safety system, allowing for mounting flush with the back wall. With the flexibility to customize width, depth and height, the BV is the solution for laboratories that require either a custom or standard size hood.

The BV Series comes standard with a vertical rising sash but can accommodate a horizontal, combination, or disappearing post sash style.

Where does the exhaust go?

This is a ducted fume hood that uses a roof mounted blower to pull air from the enclosure, through the exhaust plenum and out of the facility.

What fumes, gases or chemicals is this designed to filter out or exhaust?

Any toxic fumes, vapors, smoke or dust. Depending on the chemicals being used, certain liner materials should be used. For general use, the poly resin liner will work. For hydrochloric acids you should use poly resin with corrosion resistant hardware or go with a PVC liner. For work using radioisotopes, you should use a stainless steel interior.

With over 60 years of experience, we at iQ Labs are a leading fume hood manufacturer. Your fume hood will be fully customized for your space; each fume hood is designed with your needs and accessibility in mind. We verify its functionality and safety through a proper inspection, and our dedicated service team is available to answer all your questions. At iQ Labs, our knowledge and service are manufactured into our products. Backed by our industry-leading, 10-year limited warranty, you can be assured you are getting the best quality hood for your next project.

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