Lennox Genuine OEM #68L75 Filter Accessory Kit. For use with 12" x 25" x 1-7/8" or 15" x 25" x 1-7/8" filters.
The 68L75 includes the filter, filter frame, knobs, and screws. This is to be used when converting to side return air flow. This filter accessory kit is used on MPGA Series furnaces that specify either a 15" x 25" x 1-7/8" or 19" x 25" x 1-7/8" filter.