Description

USA Lab Ductless Fume Hood (DCH) | Portable Filtration Workstation

A ductless fume hood is a stand-alone, compact workstation that provides a continuous flow of air to help control hazardous fumes and vapors. The USA Lab Ductless Fume Hood filters airborne contaminants and recirculates clean air back into your working environment, so no exterior ducting or makeup air is necessary. These air filtration systems are designed to keep harmful airborne contaminants away from the operator’s respiratory zone while they work within the hood.

Also referred to as exhaust hoods, these containment systems are used for a variety of applications including chemical fume control, powder and dust removal, solvent vapor control, pharmaceutical powder filling, light grinding, acid gas fumes, anesthesia gas containment, epoxy fume control, and other applications that produce hazardous particulates and fumes.

Ductless fume hoods offer key advantages versus ducted hoods: no costly ducting or venting, fewer permitting hurdles for exhausting outside, mobility for layout changes, and significant energy cost savings since conditioned air is not exhausted outdoors.

A ductless fume hood should only be considered for use in labs with low hazard chemicals and appropriate filtration media.
Certain low molecular weight gases may not be efficiently captured through carbon filtration (e.g., methane, butane, propane). High loading (e.g., gallons/day solvent evaporation) may require ducting outside.

No External Ducting Portable & Adaptable Up to 350 CFM Options Minimal Installation Costs

Vent-Free: Recirculates filtered air back into the room—no exterior venting required.

Efficient: Significant energy savings by avoiding conditioned air exhaust and makeup air.

Flexible: Portable footprint makes layout changes simple for evolving lab workflows.

Why buy from USA Lab

Expert Support
Engineers & technicians on staff.

Quality First
Tested and trusted products.

Fast Fulfillment
Nationwide 1-2 day shipping.

Warranty & Parts
US-based service & spares.

Resources & Downloads

Safety Data Sheets (SDS) Technical Data & Guides Replacement Filters Support & Documentation

Why this USA Lab ductless fume hood?

What a ductless fume hood is — A compact, stand-alone workstation that filters hazardous fumes/vapors/particulates and returns clean air to the room without exterior ducting.
How it works — Continuous airflow draws contaminants away from the user’s breathing zone, through filtration media, and recirculates filtered air back into the workspace.
Ductless vs. ducted — Ductless hoods reduce installation cost and permitting complexity, while ducted hoods may be preferred for heavy solvent loading or regulated exhaust requirements.
Key benefits — Minimal installation costs, portability, minimal maintenance, environmentally friendly operation, and significant energy cost savings.
Safety considerations — Certain low molecular weight gases are not efficiently captured via carbon filtration, and high usage rates can saturate filters quickly; consult your EHS requirements and application details.

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Get sizing help, filter selection guidance, and workflow integration tips.

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Technical Specifications

Spec	SS-212-DCH	SS-218-DCH	SS-224-DCH	SS-324-DCH	SS-330-DCH	SS-340-DCH	SS-350-DCH	SS-360-DCH	SS-370-DCH
SKU	SS-212-DCH	SS-218-DCH	SS-224-DCH	SS-324-DCH	SS-330-DCH	SS-340-DCH	SS-350-DCH	SS-360-DCH	SS-370-DCH
Outer Dimensions	9.6" D x 11.6" W x 10.2" H	18.5" D x 20" W x 19" H	24" D x 26" W x 25" H	24" D x 26" W x 25" H	24" D x 32" W x 25" H	24" D x 42" W x 25" H	24" D x 52" W x 25" H	24" D x 62" W x 25" H	24" D x 72" W x 25" H
Interior Dimensions	10.4" D x 13" W x 10.6" H	18" D x 18" W x 18" H	23.5" D x 24" W x 24" H	23.5" D x 24" W x 24" H	23.5" D x 30" W x 24" H	23.5" D x 40" W x 24" H	23.5" D x 50" W x 24" H	23.5" D x 60" W x 24" H	23.5" D x 70" W x 24" H
Access Area (Height)	10"	8"	8"	8"	8"	8"	8"	8"	8"
Hood Material	Acrylic	Sides: 0.25" white acrylic	Sides: 0.25" white acrylic	Sides: 0.25" white acrylic	Sides: 0.25" white acrylic	Sides: 0.25" white acrylic	Sides: 0.25" white acrylic	Sides: 0.25" white acrylic	Sides: 0.25" white acrylic
*PC - Polycarbonate		Base: 0.5" white HDPE	Base: 0.5" white HDPE	Base: 0.5" white HDPE	Base: 0.5" white HDPE	Base: 0.5" white HDPE	Base: 0.5" white HDPE	Base: 0.5" white HDPE	Base: 0.5" white HDPE
		Top: 0.5" clear PC	Top: 0.5" clear polycarbonate	Top: 0.5" clear polycarbonate	Top: 0.5" clear polycarbonate	Top: 0.5" clear polycarbonate	Top: 0.5" clear polycarbonate	Top: 0.5" clear polycarbonate	Top: 0.5" clear polycarbonate
		Front Window: 0.25" clear PC	Front Window: 0.25" clear polycarbonate	Front Window: 0.25" clear polycarbonate	Front Window: 0.25" clear polycarbonate	Front Window: 0.25" clear polycarbonate	Front Window: 0.25" clear polycarbonate	Front Window: 0.25" clear polycarbonate	Front Window: 0.25" clear polycarbonate
Blower Dimensions	10.5" L x 8" W x 8.5" H	10.5" L x 8" W x 8.5" H	10.5" L x 8" W x 8.5" H	15.5" L x 13" W x 14.5" H	15.5" L x 13" W x 14.5" H	15.5" L x 13" W x 14.5" H	15.5" L x 13" W x 14.5" H	15.5" L x 13" W x 14.5" H	15.5" L x 13" W x 14.5" H
Blower Material	16G carbon steel w/ polyester epoxy coating on all surfaces	16G carbon steel w/ polyester epoxy coating on all surfaces	16G carbon steel w/ polyester epoxy coating on all surfaces	16G carbon steel w/ polyester epoxy coating on all surfaces	16G carbon steel w/ polyester epoxy coating on all surfaces	16G carbon steel w/ polyester epoxy coating on all surfaces	16G carbon steel w/ polyester epoxy coating on all surfaces	16G carbon steel w/ polyester epoxy coating on all surfaces	16G carbon steel w/ polyester epoxy coating on all surfaces
Weight (Approx)	15 lbs	35 lbs	55 lbs	95 lbs	100 lbs	115 lbs	125 lbs	140 lbs	155 lbs
Air Volume	up to 80 CFM	up to 80 CFM	up to 80 CFM	up to 350 CFM	up to 350 CFM	up to 350 CFM	up to 350 CFM	up to 350 CFM	up to 350 CFM
Inlet Velocities on High (Approx)	CPF + HEPA Filter – 100 FPM	CPF + HEPA Filter – 100 FPM	CPF + HEPA Filter – 100 FPM	CPF + HEPA Filter – 100 FPM	CPF + HEPA Filter – 130 FPM	CPF + HEPA Filter – 130 FPM	CPF + HEPA Filter – 105 FPM	CPF + HEPA Filter – 100 FPM	CPF + HEPA Filter – 100 FPM
*CPF - Carbon Pre-Filter	CPF + Activated Carbon – 60 FPM	CPF + Activated Carbon – 60 FPM	CPF + Activated Carbon – 60 FPM	CPF + Activated Carbon – 60 FPM	CPF + Activated Carbon – 115 FPM	CPF + Activated Carbon – 115 FPM	CPF + Activated Carbon – 80 FPM	CPF + Activated Carbon – 70 FPM	CPF + Activated Carbon – 70 FPM
*CF - Carbon Filter
Electrical	115/1/60, 0.3 amps 8’ grounded power cord w/NEMA 5-15P plug	115/1/60, 0.3 amps 8’ grounded power cord w/NEMA 5-15P plug	115/1/60, 0.3 amps 8’ grounded power cord w/NEMA 5-15P plug	115/1/60, 2 amps 8’ grounded power cord w/NEMA 5-15P plug	115/1/60, 2 amps 8’ grounded power cord w/NEMA 5-15P plug	115/1/60, 2 amps 8’ grounded power cord w/NEMA 5-15P plug	115/1/60, 2 amps 8’ grounded power cord w/NEMA 5-15P plug	115/1/60, 2 amps 8’ grounded power cord w/NEMA 5-15P plug	115/1/60, 2 amps 8’ grounded power cord w/NEMA 5-15P plug
Sound Level	55 dba	55 dba	55 dba	61 to 66 dba (low to high)	61 to 66 dba (low to high)	61 to 66 dba (low to high)	61 to 66 dba (low to high)	61 to 66 dba (low to high)	61 to 66 dba (low to high)
Max Operating Temperature	170° F	170° F	170° F	170° F	170° F (250° F SS model)	170° F (250° F SS model)	170° F (250° F SS model)	170° F	170° F
Filtration	See item 31516 for full line of available filters	See item 31516 for full line of available filters	See item 31516 for full line of available filters	See item 31516 for full line of available filters	See item 31516 for full line of available filters	See item 31516 for full line of available filters	See item 31516 for full line of available filters	See item 31516 for full line of available filters	See item 31516 for full line of available filters
Warranty	Limited two-year warranty on defects due to materials or workmanship.	Limited two-year warranty on defects due to materials or workmanship.	Limited two-year warranty on defects due to materials or workmanship.	Limited two-year warranty on defects due to materials or workmanship.	Limited two-year warranty on defects due to materials or workmanship.	Limited two-year warranty on defects due to materials or workmanship.	Limited two-year warranty on defects due to materials or workmanship.	Limited two-year warranty on defects due to materials or workmanship.	Limited two-year warranty on defects due to materials or workmanship.
Clear Anti-Static Vinyl Curtains	Included	Included	Included	Optional	Optional	Optional	Optional	Optional	Included
Hour Counter	Optional	Optional	Optional	Optional	Optional	Optional	Optional	Optional	Optional
Light	N/A	Included	Included	Included	Included	Included	Included	Included	Included
Magnehelic Gage	N/A	N/A	N/A	Optional	Optional	Optional	Optional	Optional	Optional
Spill Tray	Optional	Optional	Optional	Optional	Optional	Optional	Optional	N/A	N/A
Variable Speed Controller	Optional	Optional	Optional	Included	Included	Included	Included	Included	Included
Velometer	Optional	Optional	Included	Included	Included	Included	Included	Included	Included

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Tailored tanks, skids, and integration help.

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FAQ

What is a ductless fume hood and how does the USA Lab Ductless Fume Hood work?

The USA Lab Ductless Fume Hood (DCH) is a stand-alone workstation that provides continuous airflow to capture hazardous fumes, vapors, powders, and light dust. Air is pulled through the hood, passes through filtration media designed for the application, and clean air is recirculated back into the room—so no exterior ducting or makeup air is required.

USA Lab Ductless Fume Hood vs. ducted fume hood: which should I choose?

The USA Lab Ductless Fume Hood is ideal when you want minimal installation cost, portability, and energy savings. A ducted fume hood may be better for high chemical loading, heavy solvent evaporation (e.g., gallons per day), or when site regulations require venting to the exterior. Always match the hood type and filtration to your chemical family and usage rate.

What are the safety considerations for the USA Lab Ductless Fume Hood?

Safe operation of the USA Lab Ductless Fume Hood is critical. Ductless hoods should typically be used with low hazard chemicals and appropriate filtration media. Certain low molecular weight gases are not efficiently captured via carbon filters (e.g., methane, butane, propane). For best performance, limit pedestrian traffic in front of the hood, place bulky equipment toward the rear, raise large equipment at least 2" to allow airflow, and maintain a regular inspection/cleaning schedule.

How do I choose the right USA Lab Ductless Fume Hood model size?

Select the USA Lab Ductless Fume Hood model based on your required work area width, expected loading, and desired airflow. Use the comparison chart to match outer/interior dimensions, air volume (up to 80 CFM or up to 350 CFM), and included/optional features like variable speed controller, velometer, lighting, and curtains.

Important Shipping Notice!

DISCLAIMER:

All items are carefully packaged to ensure safe delivery. In the rare event that your item arrives damaged, please notify us within 3 days of receipt. We will promptly provide a replacement or issue a refund.

Please note that any damage occurring after delivery is not covered under warranty. We appreciate your understanding and your trust in our products.