Marineland Penguin Bio-Wheel Power Filter Cartridges Size E 4pk

REPLACEMENT FILTER CARTRIDGES: Fit Marineland Emperor Bio-Wheel Power FiltersEASY TO INSTALL: Pre-assembled cartridges slide easily into place, providing superior mechanical and chemical filtration and making replacement fast, dry and effortlessOPTIMUM WATER-TO-CARBON CONTACT: Patented ribbed backing ensures even distribution of carbon for crystal clear, clean waterCOLOR-CODED PACKAGING: Rite-Size? packaging makes it simple to choose the right size replacement cartridge for your filterMARINELAND FILTRATION PRODUCTS: Count on Marineland brand for the most reliable, technically advanced aquariums and accessories on the market