This replacement filter cartridge comes with a technical specification Filbur# FC-0124, Pleatco # No, Unicel # 4CH-920, and OEM # 4CH920. This product is a high performance filter cartridge with a top load of 20 sq. ft. This state of the art 20 sq. ft. Saratoga Spas filter is of superior quality as per industry standards. This filter comes with moulded cone handle at the top and a 1 1/4" SAE at the bottom. It is 6 3/4" in length and 4 5/8" wide. It 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.