Marineland Penguin Power Rite-size C Filter

Marineland Rite-Size Cartridge C, 6-Pack. Product Description: No Fabric Made in US REPLACEMENT FILTER CARTRIDGE:  Pack of 6 fits Marineland Penguin PRO Power Filters 275 and 375; also fits original Penguin Power Filters 200 and 350. EASY TO INSTALL:  Pre-assembled cartridges slide easily into place, providing mechanical and chemical filtration and making replacement fast, dry and effortless. THREE-STAGE FILTRATION:  Mechanically filters water through a pad of double-thick poly fiber. Chemically filtered through Black Diamond Premium Activated Carbon. BIO-Wheel technology delivers wet/dry biological filtration for nitrifying bacteria growth.