Patent ID: 10245542

Abstract:
A foldable filter frame including a filter media and a rectangular support frame surrounding and secured to the filter media, having opposed side frame elements having a hingable joint formed near the midpoint that allows the support frame and a dirt-capturing surface of the filter media to fold along lateral line from a planar, extended position to a folded position. The joint includes a fold line in a dirtied-side attaching panel, and a cut formed through a base and a clean-side attaching panel, of the side frame elements, and a means for biasing the joint to the planar, extended position. The biasing means is a strip of elastic member, stapled to an inside surface of the clean-side attaching panel in a relaxed state, across the cut formed through the clean-side attaching panel. The frame can have Velcro-type fasteners in the corners to secure the frame in the folded position.