Forced air system air filter

Details Forced air system air filter Forced air system air filter

1997-08-14

1999-07-13

Spitzer, Robert

Gas separation

Two or more separators

With framework for edge to edge relation

55487, 55497, 55511, 55521, 55527, 55DIG39, B01D 4612

Patent

active

059220961

ABSTRACT:
An HVAC filter having a pleated paper filter and a plastic pre-filter, the filter and pre-filter are mounted in a parallel relation in the frame. The plastic pre-filter includes a plastic mesh having a plurality of openings, and an irregular surface on the inlet side to prevent matting of filtered material.

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