?x?x.50" Flat Aluminum Foil Filter with Aluminum Frame (Between 401-450 sq. in.)HXAS050450 $53.00 SKU: HXAS050450 Back $53.00 Quantity -+ Add to Cart Details ?x?x.50" Flat Aluminum Foil Filter with Aluminum Frame (Between 401-450 sq. in.) DetailsBackDetails?x?x.50" Flat Aluminum Foil Filter with Aluminum Frame (Between 401-450 sq. in.)See MoreSee Less