Rite-Size B 6 pk

Change your media in seconds with these ready-to-use cartridges. Just rinse and then drop them in. Cartridges provide a double thick polyfiber pad on one side to efficiently trap dirt and debris. The other side quickly removes dissolved pollutants by means of a patented ribbed backing that evenly distributes the super effective Black Diamond Carbon. Rite-Size B fits Penguin BIO-Wheel Filter 150 and old style Penguin BIO-Wheel Filter 110/125.