33x37x4 MERV 13 High Capacity PleatActual Size: 33x37x4 $204.36 SKU: GPS33A37A4A Back $204.36 Quantity -+ Add to Cart Details 33x37x4 MERV 13 High Capacity Pleat DetailsBackDetails33x37x4 MERV 13 High Capacity PleatSee MoreSee Less