glasfloss 20 x 22 1/4 x 1 fiberglass air filters, 6-pack, ac & furnace, glasfloss | double-strut design for 10% greater open area; heavy-duty craftboard frame; disposable, no metal parts; made in usa is up for auction in Home & Kitchen. This item is in As Is condition. Bid on this item at our Louisville - Intermodal Dr. location before the auction closes.