Channel Hood Model 22

All Welded Terminal Hoods

Product Overview

  • All-welded construction
  • Filters replaceable from the roomside
  • Gel-seal design to prevent bypass leakage
  • Heavy-duty butterfly damper adjustable from roomside or optional guillotine
  • Aerosol injection system accessible from roomside (optional)
  • Designed for installation in tee-bar or gypsum board ceilings
  • Filter alignment tabs to center gel track on knife-edges

Ideal for Pharmaceutical and Biotech Applications

The AAF Flanders Channel Hood Model 22 is an ideal terminal filter hood for pharmaceutical and biotech cleanrooms, or wherever hoods are regularly validated for performance and leak-free operation. These hoods may be installed in a variety of ceiling types, including tee-bar ceilings, gel-seal grid systems, and plaster ceilings. Ideally suited for Class 100 “spot” applications, they may also be used to create Class 10,000 to Class 100,000 areas by locating the appropriate number of units in the ceiling. Units may also be installed for 100% ceiling coverage to achieve cleanliness levels to Class 10.

Gel Seal Design Ensures Filter Seal Integrity

The Channel Hood Model 22 features a gel-seal design offering superior protection against bypass leakage. Invented by AAF Flanders to overcome the leakage problems associated with gasket filter seals, the gel-seal interface ensures a positive seal between the replaceable HEPA/ULPA filter and the hood. Its effectiveness has been proven in thousands of applications.

Convenient Roomside Access and Service

The design of this hood allows access to the filters from roomside, without disturbance to the installed housing. Bottom-loading filters make roomside filter change-out quick and easy. Damper controls and test ports are also easily accessed from roomside, by simply removing the protective grille.

Aerosol Injection System Offers the Industry’s Most Uniform Challenge for Testing Installed Filters

The Channel Hood Model 22 aerosol injection system, which is an option, has become the industry standard for ease of use and reliability in conducting in-place filter testing. Working entirely from roomside, the test technician introduces a chal­lenge aerosol into the hood, then scan tests the filter. Because it creates a truly uniform test challenge, the AAF Flanders aerosol injection system provides the highest degree of confidence in scan test results.


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