33x37x4 MERV 9 High Capacity PleatActual Size: 33x37x4 $145.04 SKU: KHCS33A37A4A Back $145.04 Quantity -+ Add to Cart Details 33x37x4 MERV 9 High Capacity Pleat DetailsBackDetails33x37x4 MERV 9 High Capacity PleatSee MoreSee Less