Terra Part # 2101-20
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Hood; Laminar Flow Containment, Polypropylene, 49.75" W x 33.5" D x 48" H, 120 V, 60 Hz, WhisperFlow
  • FFU and exhaust plenum add 11” (279 mm) to height of hood
  • Ideal for metals testing, biological sample treatment, solvent cleaning, soldering and other processes that require particle protection of non-hazardous dust and fumes
  • Select 99.99% efficient HEPA or 99.999% efficient ULPA fan/filter unit to provide a vertical laminar flow of particle-free air inside the work area
  • Perforated work surface contains chemical spills and directs air to an in-house exhaust duct (can be customized to provide solid work platform)
  • Baffle adjustments allows some control over speed and direction of exhausted air
  • Polypropylene models resist wide range of aggressive chemicals, including acids; 304 stainless steel models are ideal for solvents and flammable materials
  • Low-profile design fits on standard benches and requires no rear access or clearance
  • Swing vane anemometer monitors air flow direction and speed past the operator to indicate effective containment
  • Tilt-up static-dissipative PVC sash resists wide range of chemicals

Manufactured by: Terra Universal

Model: Exhaust Fume

Width: 48"

Sash Opening: 16"

Work Area Dimensions: 47.75" W x 16" D x 25.5" H

Inside Width: 48.75"

Inside Height: 25.6"

Inside Depth: 23.2"

Hood Design: Benchtop

Frame Material: Polypropylene

Unit of Measure: EA

Marks & Listings: UL, ULC

Electrical Specifications: 120 V, 3.7 A, 444 W, 1 Ph, 60 Hz

Weight, Product: 120 lb

Dimensions, Product: 49.75" W x 33.5" D x 48" H

Weight, Shipping: 200 lb

Dimensions, Shipping: 55" W x 38" D x 54" H

Package Type: Crate

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  1. Smart WhisperFlow® Fan Filter Units feature electronically commutated motors for energy efficiency, quiet operation and remote speed control | 6601-24B-HR-EC displayed
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  2. WhisperFlow® Fan Filter Unit for shallow enclosures; baffle system and anodized aluminum diffuser promotes uniform air speed | 6601-1648-H displayed
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  3. Ensures safe lighting in the presence of flammable vapors and dusts | 2400-40 displayed
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  4. Provides a stream of static-neutralizing ions to protect ESD-sensitive components.
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  5. 60” wide stainless steel laboratory base cabinet with 2 doors | 1725-04 displayed
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  6. 60” wide stainless steel base cabinet with epoxy table top; ideal for biochemistry labs and proteomic research | 1725-14 displayed
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  7. Electropolished 304-stainless steel ISO 4 cleanroom table with continuous seam welds; durable, all-welded work station for critical processes | 9603-07 displayed
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  8. Isolates work surface from building vibration that can cause motion sickness; ideal for high-precision equipment and high-magnification operations | 1570-81A displayed
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  9. Drawers; 304 SS, Left Mounted for TUI Work Stations
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  10. Drawers; 304 SS, Right Mounted for TUI Work Stations
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  11. Stackable drawers mount easily under work surfaces and shelves.
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  12. Stackable drawers mount easily under work surfaces and shelves.
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  13. These polymer Mobile Drawer Cabinets have a smooth design that eliminates sharp edges and corners where dust can accumulate | 1704-01 displayed
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  14. 1700-97 Drawer Lock, cam lock | 1700-97 displayed
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  15. Ideal for glovebox isolators and other confined, difficult-to-clean chambers. | 3305-90 displayed
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  16. Easy to read and can safely operate at total pressures up to 30 psig | 2625-43 displayed
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  17. Shown: Vacupass installed in the interior wall of a biosafety cabinet | 4642-49 displayed
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  18. Service; UL Listing Declaration, for Laminar Flow and Fume Hoods
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  19. FasTrak 24-7 Expediting Service
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  20. Qualification Documentation (IQ/OQ) for Terra Universal System
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  21. White Glove Freight Service
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  22. Equipment Testing
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  23. Bring power safely and conveniently to wherever you need it with a full line Plug-In Outlet | 1681-80 displayed
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  24. Four-pin power cord adapter for fan/filter unit allows connection to standard 120VAC/60Hz power receptacle | 6601-13 displayed
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Specialty Laboratory Hoods

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  • Labconco Xpert Balance Enclosure – 4 ft Labconco Xpert Balance Enclosure – 4 ft
  • Labconco Xpert Nano Ductless Exhaust Hood Labconco Xpert Nano Ductless Exhaust Hood
  • PCR Workstation PCR Workstation
  • Explosion-Proof WhisperFlow Hood Explosion-Proof WhisperFlow Hood
  • Terra Universal IQ-OQ Process

Features and Benefits

Laminar Flow and Fume Hoods FAQs

Laminar Flow and Fume Hoods FAQs

Laboratory hoods serve a number of critical purposes in the lab environment.

Product protection from particulate contaminants in the lab environment, including microbes

Such hoods, often called laminar flow workstations or clean benches, use a flow of HEPA-filtered air to prevent influx of viable and non-viable particles into the enclosure and to sweep away any contaminants generated by the work process.

Protection of personnel and lab environment from substances generated inside the enclosure

For fume containment, laboratory fume hoods use a ducted ventilation system that maintains negative pressure. Where ducting is impractical, ductless hoods are also available for removal of non-hazardous contaminants (fumes or particles), using either HEPA or activated carbon filters.

Protection of product, operator and environment

Biological safety cabinets combine aspects of both hood types: a laminar flow of micro-filtered air and negative-pressure containment of bio-hazard fumes.

Laminar Flow Hoods
Vertical Laminar Flow Hood Airflow Diagram

Laminar flow hoods (also called laminar flow clean benches) force air through a HEPA or ULPA filter to create a clean work area free of nearly all contaminating particulates, including bacteria, mold spores and many viruses. These hoods use a vertical or horizontal airflow design. Both provide excellent protection of products from particulates and cross-contamination, but do not protect the operator or environment.

So why choose one over the other? Vertical laminar flow hoods (VLF Hoods) require less floor space, but more overhead clearance. In addition, a sash at the front of the VLF hood provides a barrier between air exiting the hood and the operator’s face. VLF hoods create turbulent air flow when air strikes the work surface, requiring sterile work to be performed above the work surface.

HLF hoods minimize air turbulence (and particle backflow) on the work surface except where equipment disrupts the horizontal airflow. However, they direct the airflow directly at the operator’s face and require more depth to accommodate placement of the fan filter unit at the rear of the hood.

Read more about the differences between horizontal and vertical laminar flow hoods

Fume Exhaust Hoods

Laboratory fume hoods draw air from the environment through the opening of the hood, allowing environmental contaminants into the work area. Thus, lab fume hoods do not offer a sterile environment or product protection. Instead, chemical fume hoods are designed to protect the operator from dangerous or irritating fumes and powders generated from work performed inside the hood.

In ducted fume hoods and canopy fume hoods, air passes out of the hood through a duct leading to an in-house ventilation system that contains and/or neutralizes hazardous materials.

Ductless Exhaust Hood Air Flow Diagram

In ductless fume hoods, fans draw exhaust air through a series of filters that remove irritating substances before release back into the room. Since these filters are not 100% efficient in removing all substances, ductless fume hoods are not advised in the presence of biohazards; however, they provide a convenient, cost-effective solution for operations involving irritating but non-hazardous fumes in facilities where an in-house HVAC system cannot be accessed.

Biosafety Cabinets

Biological Safety cabinets combine design aspects of both laminar flow and fume hoods. Filtered air is directed downward onto the work surface and then travels into a plenum through openings on the front and sides of the hood. Depending on the classification of the biosafety hood, some percentage of air is recirculated through a HEPA filter while the rest is directed out of the hood through an exhaust system. Thus, biosafety cabinets offer operator, environmental and product protection.

These laboratory safety cabinets (sometimes called IV hoods or compounding hoods) are ideal when preparing sterile medications such as chemotherapeutic agents that may pose a risk to the operator.

BSCs, BSLs, and ISO Classes

When it comes to working with hazardous or potentially infectious material, protecting personnel must be the primary concern. However, offering personnel protection does not have to come at the cost of risking product integrity. Class II BSCs provide protection to both personnel and product simultaneously. They maintain an ISO class 5 clean work area for product manipulation, while ensuring that exhaust air is filtered and ducted out of the environment. Thus, a class II BSC is the ideal solution when working with moderately hazardous material and both personnel and product safety are required.

Read more about these lab hoods here regarding their biological safety rating

Removable Perforated Polypropylene Tray

Perforated polypropylene tray minimizes the impact of spills and resists chemicals. Harmful substances pass underneath while the tray slides out for easy clean-up.

Adjustable Air Baffles

Adjustable baffles allow some user control over direction and speed of airflow for tailored particle and fume containment across the work surface.

Continuous Product Improvement

At Terra, we strive to develop and produce the highest quality products for our customers to improve health, safety, performance, and yields. Our product quality is enabled by high-grade manufacturing equipment and processes, 45 years of engineering and application expertise, and our commitment to continuously improve.

Long-Term Customers

Terra is committed to building long-term relationships with satisfied clients; 94% of orders each year come from repeat customers

4,000 Worldwide Cleanrooms

Since 1976, Terra has designed and manufactured over 4,000 cleanrooms for companies at the leading edge of high technology

Complete Order Transparency

Using Terra’s OnTrak system, our customers can view real-time production updates, receive shipment notifications and track their orders until they arrive at their facility
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 * Terra's FasTrak services limited guarantee: to ship on the ESD or date specified OR to refund up to 100% of FasTrak charges. This guarantee covers no direct, special, consequential or other damages and is strictly limited to up to 100% of the amount paid for FasTrak service. When a specified ship date is missed due to factors outside Terra's control (vendor performance, deliveries by shipping companies, etc.) and random factors such as accidents, the credit of up to 100% of the FasTrak 24/7 may not apply. FasTrak service requested after order placement will be quoted and accepted based on available time remaining before required ship date.

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