Marineland Penguin Rite-Size C Bio-Wheel 200, 275, 350 & 375 Replacement Filter Cartridge (6-Pack)

The Rite-Size C Marineland Penguin Replacement Filter Cartridge (6-Pack) is for the Marineland Penguin Bio-Wheel 275 Power Filter and the Marineland Penguin Bio-Wheel 375 Power Filter. It is also for the discontinued Penguin Bio-Wheel 200 & 350.