Abstract: A filter apparatus is provided. The filter apparatus includes a filter element. The filter element includes filter media supported in a frame construction. The frame construction having opposed side panels and a rectangular border flange along a first end. The rectangular border flange projects outward from and extending around the opposed side panels. The first end is an inlet end or an outlet end of the filter element. The filter apparatus includes a filter frame adapter formed separately from the frame construction and secured to the frame construction to adapt the filter element for a different mounting interface. The filter frame adapter includes a pair of complimentary adapter flanges each projecting outward relative to one of the opposed side panels. The adapter flanges are at a second end that is opposite a first end. The second end is at the inlet end or the outlet end.

Abstract: A filter apparatus is provided. The filter apparatus includes a filter element. The filter element includes filter media supported in a frame construction. The frame construction having opposed side panels and a rectangular border flange along a first end. The rectangular border flange projects outward from and extending around the opposed side panels. The first end is an inlet end or an outlet end of the filter element. The filter apparatus includes a filter frame adapter formed separately from the frame construction and secured to the frame construction to adapt the filter element for a different mounting interface. The filter frame adapter includes a pair of complimentary adapter flanges each projecting outward relative to one of the opposed side panels. The adapter flanges are at a second end that is opposite a first end. The second end is at the inlet end or the outlet end.