Monday, 17 Dec 2018
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Holding Frame

Holding Frames


Holding Frames are used to construct built-up filter banks for upstream or downstream access using ASHRAE-rated filters. The frames will accommodate 1”, 2”, or 4” panel filters including metal washable filters. They are also suitable for bag filters, self-supporting rigid filters and disposable type carbon elements. A filter-to-frame seal is effected by a factory-installed gasket and positive-sealing fasteners. The standard frame is nominal 3” deep and constructed of 16 ga. Galvanized steel. Frames are also available in nominal 2”, 4”, 6” and 12” depths. Actual dept is 1/8” under nominal.

 

 

Fastener Size Chart
Length Filter Usage Number per Frame
Upstream Service Downstream Service
1” 1” pre filter, bag filter, medium filter or V-Shape 2 4
2” 2” pre filter 2 4
3” 2” pre filter, bag filter, medium filter or V-Shape 2 -
4” 4” pre filter 2 4
5” 4” pre filter, bag filter, medium filter or V-Shape 2 -
6” 6” medium filter or V-Shape 2 4
12” 12” medium filter or V-Shape 2 4

 

Holding Frames can be assembled with pop revets or nuts and bolts. Prior to assembly, all
sides should be caulked with a non-hardening compound to prevent air bypass. Filter banks three
frames high or higher should be strengthened with 3” wide 16 ga. Stiffeners between each vertical row.

Holding Frame