Patent ID: 8795404

Claim:
An air filter frame constituted of four profiled elements being held together by angle pieces and surrounding an opening therebetween, in which a pack of pleated filter medium is intended to be mounted, said profiled elements having a front side, which when a pack of filter medium is mounted in the frame is adjacent to an inlet side thereof, and a rear side, which when a pack of filter medium is mounted in the frame is adjacent to an outlet side thereof, wherein an inwardly open sealing channel extends along each profiled elements in the front end thereof wherein said sealing channel is defined by a channel wall including a rearwardly extended part followed by an inwardly extended part in turn followed by a forwardly extending part, the forwardly extending part having a smaller dimension than the rearwardly extending part, and wherein a rear wall of each profiled element extends inwardly from an outer wall of the profiled element and is extended beyond the forwardly extending part of the channel wall in an inward direction, the portion of the rear wall extending beyond the forwardly extending part of the channel wall supporting a rear edge of a pack of filter medium mounted in the frame.