Abstract: A media filter cabinet for a gas furnace is sized to accept a high-efficiency media filter while being easily adaptable to accept a standard size filter. A perforated duct flange on one side of the cabinet permits ease of installation since the flange can be bent at 90 or 180 degrees along the perforations, or removed, depending on the type of duct the cabinet is installed with. The cabinet is adapted to fit a standard filter by using a removable bracket and a wire to retain the standard filter within the cabinet. With the removal of a front door and a back side of the cabinet, the cabinet collapses to diminish its shipping size. In one embodiment, the cabinet is in kit form which is easily assembled.

Abstract: A multipoise furnace cabinet includes right and left sides with top and bottom plates connecting upper and lower parts of the right and left sides together. In one embodiment, top and bottom plates include vent cutouts. A side of the top plate has a first partially cut section that aligns with a second partially cut section in a door to the furnace cabinet, wherein the first and second partially cut sections substantially describe a circle, such that when the first and second partially cut sections are removed from the door and the cabinet, a resulting opening permits entry of a flue vent pipe. Front edges of the right and left cabinet sides are flanged, as are the front edges of the top and bottom plates. In another embodiment, the vent cutouts are entirely within the door.