21.00x24x4 MERV 9 Standard Capacity PleatActual Size: 21.00x24x4 $81.12 SKU: KSCS21B24A4A Back $81.12 Quantity -+ Add to Cart Details 21.00x24x4 MERV 9 Standard Capacity Pleat DetailsBackDetails21.00x24x4 MERV 9 Standard Capacity PleatSee MoreSee Less