• REPLACEMENT FILTER CARTRIDGE: Includes QTY 24 of 3-Pack Cartridges; 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.
• OPTIMUM WATER-TO-CARBON CONTACT: Ribbed backing ensures even distribution of carbon for sparkling clean water.
• COLOR-CODED PACKAGING: Rite-Size packaging makes it simple to choose the right size replacement cartridge for your filter.

Shipping Note: Shipping to Alaska, Hawaii, PO Boxes, and APO addresses is not available for this item

Warranty: 90 Day Woot Limited Warranty