Jardin Multilayer Column Shaped Aquarium Fish Sponge Tank Filter With single sponge, aquarium sponge filter is for mechanical and biological filtration Fish tank filter is suitable for external and top filter as pre-filtration unit Size: (D)4. 7 x (H)12. 8cm, (D)1. 85" x (H)5" Weight: 46. 4g Package included: 1 x column shaped filter