Marineland Emperor Rite-Size Filter Cartridge Aquarium Filter Insert - Size E - 2 Pack

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

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