21.50x31x1 MERV 8 Standard Capacity NOVA Pleat - 8 PackNominal Size: 21.50x31x1 $207.40 SKU: NSS21K31A1A-8 Back $207.40 Quantity -+ Add to Cart Details 21.50x31x1 MERV 8 Standard Capacity NOVA Pleat - 8 Pack DetailsBackDetails21.50x31x1 MERV 8 Standard Capacity NOVA Pleat - 8 PackSee MoreSee Less