Ductless Exhaust Configuration Shown with polypropylene hood and filter/blower housings, optional AirGard® and stand.

Ductless Exhaust Fume Hood

Ductless Exhaust Fume Hood

This negative-pressure system ventilates and purifies hazardous fumes generated under the hood, allowing safe indoor release of exhaust. It is ideal for such operations as soldering, screen printing, and chemical mixing. Its portability enables you to put a cover on operations that might otherwise create a toxic work environment!

The 1200 CFM impeller blower provides ample airflow to ensure safe ventilation of hazardous fumes under the hood. The blower includes an 8"-diameter x 1" flange to allow connection of the exhaust flow to a conduit hose, if desired. Select filter and blower housing material to suit your application: either 304 stainless steel or polypropylene.

Note: Terra recommends thorough testing of filter performance in each application prior to exhaust release, and assumes no responsibility for damage or injury that may result as a consequence of improper filter selection or use.

Unless otherwise specified, blower/filter modules come installed as indicated in the illustration, with the higher-rated filter positioned downstream of the purification filter in the filter housing.

Average Flow: 200 CFM without final filter 173 CFM with final HEPA filter

To Order:
1. Select the hood of the appropriate size and material

Polypropylene Hood (shown without bottom)

Note: Twin stations require two blower modules, two filter housings, and two filter sets.

Vibration-isolated stand with free-standing hood frame isolates vibrations caused by the hood blower

Non-isolated (one-piece) stand

The Universal Hood's bottomless design allows it to be placed on virtually any work surface. For optimal performance, however, Terra recommends one of these hood stands, available in two designs (see descriptions below).

Both designs feature raised lips to hold the hood securely in place. All frames (whether isolated or not) are made of rigid square tubing with a white epoxy finish, and include stainless steel scuff sleeves to prevent scuffing along the bottom leg support. The work surface stands 32" above the floor. Be sure to select the size (large or small, single or twin) to match your hood.

Choose the work surface to suit your application (see ordering table). Subsurface polypropylene plenum chambers are available for perforated benchtops on a custom basis. These plenums (designed according to your specific requirements) serve two important functions: during chemical processing, they collect hazardous spills; and during laminar flow operations, they eliminate air-flow deflection towards the operator (an important concern when hazardous fumes may be present).

Vibration-Isolated Stands feature a two-part work surface and hood frame to isolate the work area from blower vibration, which can interfere with microscope operation.