Filter with interlocking housing interface

A filtration system comprising:

• a housing comprising an outer wall and a keyway that is coupled to the outer wall;
• and
• a filter element positioned within the housing, the filter element comprising:
• first filter media panel;
• second filter media panel;
• and
• a frame coupled to the first filter media panel and the second filter media panel;
• wherein the keyway interfaces with the first filter media panel to facilitate positioning of the filter element within the housing, and wherein the keyway is oriented parallel to and offset from the first filter media panel when the filter element is installed within the housing.

A filter element comprising:

• first filter media;
• second filter media;
• and
• a frame coupled to the first filter media and the second filter media, the frame securing the first filter media and the second filter media, the frame comprising:
• a first frame member coupled to a first end of the first filter media and a first end of the second filter media, the first frame member defining a first opening and a first perimeter surrounding the first opening;
• a second frame member coupled to a second end of the first filter media, opposite the first end of the first filter media, and a second end of the second filter media, opposite the first end of the second filter media, the second frame member defining a second opening and a second perimeter surrounding the second opening, the second perimeter less than the first perimeter;
• a first side wall positioned along a first side of the first filter media and a first side of the second filter media, the first side wall coupled to the first frame member and the second frame member;
• and
• a second side wall positioned along a second side of the first filter media, opposite the first side of the first filter media, and a second side of the second filter media, opposite the first side of the second filter media.