Filter media retaining assembly for an air filter

Filter panel assembly

Filter with end cap base retainer

Frame and pad filter system

Handle construction for filter frame

Locking apparatus for filter elements

Modular filter assembly

Multi-piece air filter housing and closure arrangement

One piece filter media framework

One-piece filter housing

Paired retaining clips for gas furnace filter wire

Plastic air filter housing assembly for use in air conditioners

Re-usable frame support rack for replaceable pleated-media filte

Sealing device for filter cells

Security vent

Suction air filter for combustion engines

Support construction of filter element in dust collecting appara

Temperature insensitive filter for kinescope envelopes

Vent filter module