4" O.D. Filters - 4ch-920DF4" O.D. Filters - 4ch-920DFAvailability: 10 in stockSKU: 4ch-920DFManufacturer part number: 4ch-920DF $16.02 Qty: Add to cart Custom wishlist OKAdd to wishlistAdd to compare listEmail a friendPart Number / SKU: 4ch-920DFProduct: 4" O.D. Filters - 4ch-920DFCategory: Filter Cartridges >> 4" O.D. FiltersProduct tags hot tub parts (7713), 4ch-920DF (1)