Marineland Emperor Rite-Size Filter Cartridge Aquarium Filter Insert – Size E – 4 Pack

• Each preassembled rite-size and emperor cartridge has a patented ribbed back that evenly distributes carbon for maximum water
• Larger polyfiber filter pad traps more dirt highest grade carbon removes pollutants
• Fits emperor 280 & 400

INGREDIENTS: Emperor Filter Systems Our Heavy Duty Emperor Filter Cartridge Delivers Two Full Ounces Of Activated Carbon Filtration And 45% More Mechanical Filter Area. Highest Grade Magnum Carbon Removes More Pollutants.