Trane / American Standard BAYAH21M Aftermarket Panel Filter, 20x21.50x5, MERV 10BAY21.50AM $93.44 SKU: BAY21.50AM Back $93.44 Quantity -+ Add to Cart Details Trane / American Standard BAYAH21M Aftermarket Panel Filter, 20x21.50x5, MERV 10 DetailsBackDetailsTrane / American Standard BAYAH21M Aftermarket Panel Filter, 20x21.50x5, MERV 10See MoreSee Less