Length: 8 inches, outer diameter: 4.2 inches. The pool filter's powerful propelling stream effectively removes hair, leaves, dust, sediment, sand, and more. Provides crystal clear water and helps maintain optimal pool pump performance with Type A or C pool filters. The swimming pool filter cartridge allows the bottom of the pool to be visible to the naked eye. Compatible with Intex filter pump models 603, 604/G, 635T, 636T/G, 637R, 638/G, CS7111, CS7221/72321, EC07111, EC07221/7231, and Krystal Clear 02 and 12R filter pump models. Designed for Poly Group pool filters including SFS 1000, SFS 1500, SFS 2000, SFX-1000, SFX-1500, RP-800, RP-1000, RP-2000, RX-1000, RX-1500, and CP-2000. Replacement parts include Intex 59900E and 29000E. Compatible with Intex 500, 530, 800, 1000, and 1500 GPH pool filter pumps. Filter model numbers include Intex 28603EG, 28637EG, 28635EG, 28671EG, 58603E, 58604E, 56635E, 56636E, 56637E, 56638E, and 58623E. Easy to clean and wash after use. It is recommended to change the filter cartridge every two weeks to maximize spa performance.