The Hagen A1364 fits the following filters:
The AquaClear 50 - A1364 Aquarium Nylon Bag - 2-Pack is a two pack of nylon bags that fit the AquaClear 50 Power Filter. This replacement aquarium bag maintains clarity and freshness in freshwater and saltwater aquariums, and features a fine mesh that holds small grained filter media. The AquaClear nylon bag boasts durable nylon construction and is specially built to last.
AquaClear 50 - A1364 Aquarium Nylon Bag - 2-Pack specifications: