Pentair R172426F Dynamic Series RDC-25 Top load Pool Bulk Cartridge Filter, 25 Square Feet, 3-Ounce Dynamic Series RDC25 top load pool cartridge filter All cartridges are manufactured of the finest quality filter media Measures 1.5-inch FPT, 25 square feet cartridge filter; this product weighs 3-ounce This product has 1 year manufacture warranty Measures 15-1/2-inch length by 18-1/2-inch height by 15-1/2-inch width