?x?x.50" Flat Aluminum Foil Filter with Aluminum Frame (Between 451-500 sq. in.)HXAS050500 $55.20 SKU: HXAS050500 Back $55.20 Quantity -+ Add to Cart Details ?x?x.50" Flat Aluminum Foil Filter with Aluminum Frame (Between 451-500 sq. in.) DetailsBackDetails?x?x.50" Flat Aluminum Foil Filter with Aluminum Frame (Between 451-500 sq. in.)See MoreSee Less