This Replacement filter cartridge comes with a technical specification of Filbur# FC-4020, Pleatco # PD90SL-4, Unicel # C-7409, and OEM #2396-090. It is a high performance filter cartridge can handle a top load of 90 Sq. Ft. This state of the art 90 SQ. FT. Doughboy Skim-Line filter with injection moulded knob handle at the top and 1 1/2" open hole at the bottom is of superior quality as per industry standards. It is 26 1/4" long and 7" wide and efficiently provides you dust, sand and worm free clean and clear water solution for your pools and spas. The best in the industry this product matches all your water purifying needs and offers quality with cleanliness and hygiene par excellence.