Paul A Mcconnell

US Patent:

43348998, Jun 15, 1982

Filed:

Apr 9, 1981

Appl. No.:

6/252373

Inventors:

Paul A. McConnell - Houston TX

International Classification:

B01D 5000

US Classification:

55321

Abstract:

A filter assembly for use especially with air conditioning and heating ducts, comprising first and second rectangular frames, the latter frame being detachably positioned in the first one, and a filter element sandwiched between the rear end of the second frame and a flange seat on the first frame. Interiorly separable snap lock elements on the first and second frames serve to retain the latter frame and filter element in position in the first frame. The second frame is formed into a louver or grill and includes a plurality of horizontally-spaced and inclined slats, the spacing being so as to permit ample flow of air through the assembly, the slats serving as a handle for the insertion and withdrawal of the second frame relative to the first one. The front of the assembly is formed with a rectangular molding to conceal the front edge portions, the front of the assembly extending flush with the surrounding duct wall in the assembled condition of the filter unit, the latter being of a wooden construction to enable finishing or coating of the assembly.