Features1. Type I pool filter: Compatible for 58381 Type I pool filter, used Compatible for Flowclear filter accessories, filter element used for pool cleaning, inner diameter: 1.1 inches, outer diameter: 3.1 inches; total height: 3.46 inches. 2. Removal of impurities: The pool filter element is made of easy-to-clean and durable polyester paper. Used to filter the water in the pool so that the leaves, insects and dirt deposited do not accumulate at the bottom of the pool. 3. Powerful filtering performance: This pool filter can make the water clean and fresh. Help the pool to remove deposits and debris by collecting the dirt in the pool! This spa filter element effectively removes hair, leaves, dust, sediment, sand, etc. 4. Easy to clean: The inflatable hot tub filter is installed inside the filter pump and traps dirt when the dust passes through the system. The filter effectively absorbs dirt and is easy to clean. Simply remove the filter from the pump and rinse it off to remove the dirt with a garden hose. Be careful not to rough wipe or use a high-pressure water jet, as this will damage the filter element. 5. Maintain efficiency: It is recommended to replace the filter element every 2 weeks to make your swimming pool reach a clean and hygienic standard.SpecificationDimensions: outer diameter 78mm, inner diameter 28mm, height 88mmMaterial: PET, non woven fabricWeight: about 70g/pieceQuantity: 1/2/4pcsPackage List1/2/4*Pool Filte