The Fluval universal media bag is ideal for use in any Fluval canister filter system, Simply fill bag with sufficient filter media and close the bag using the enclosed fastener, Place the filled media bag in the desired compartment and you are ready to go, Fluval Universal Media Filter Bag Features and Benefits:, - Includes plastic fasteners, - For use in any Fluval canister filter, - Easy to use, 6, 5"" length x 10"" height SKU: RCHG0450