Honeywell 11255 - Manual (Page 89)

89
Frame Materials
Alpha 2000 Filters are available in a variety of wood and metal frame materials such as particle board, ply-
wood, galvanized steel and stainless steel.
Gasket and Fluid Seal
The standard gasket seal is 0.75” x 0.25” neoprene for installation on either the upstream, downstream or
both sides of the filter. The standard Fluid Seal is Flanders Blu-Jel® Seal which is a two - part silicone mate-
rial suitable for temperatures up to 390°F.
Faceguards (Optional)
Faceguards are used to protect the filter media from mechanical damage. The typical faceguard material is
expanded aluminized steel. Galvanized 4 x 4 mesh welded wire and Type 304 stainless steel are also avail-
able.
UL Listings
Alpha 2000 Filters are either UL900 Class 1 or Class 2 listed depending on materials of construction.
Holding Frames and Housings
Alpha Frames are designed for Alpha 2000 filters in built-up filter banks. Each filter is secured in the frame
with four bolt-type fasteners that either compress the gasket or press the knife edge into the gel in the filter
channel to maintain a leak-tight seal.
Surelock HEPA Filter Housings are recommended for side-access applications. The filters are sealed in
place with either spring-loaded swing arm assemblies or a locking mechanism. The swing arm assemblies
or locking mechanism either compress the gasket or press the knife edge into the gel in the filter channel
to maintain a leak-tight seal.
Gasket
Seal
Frame or
Housing
Blu-Jel
Seal
Filter
Knife Edge
On Frame or
Housing
Fluid
Seal
Channel
On Filter
Frame or
Housing
Surelock HEPA Housing Alpha Frame, B1 Frame, A-4 Frame
Flanders - Foremost in Air Filtration
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