This Replacement filter cartridge comes with a technical specification of Filbur# FC-1002, Unicel # FG-1002, and OEM # WC108-2A. It is a high performance filter cartridge. This state of the art American, Hayward, Pac-Fab, Sta-Rite, Astral filter is of exceptional quality. It is 12" long and 11" 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.