This filter bag is used on all of the above models of Aqua Vac automatic pool cleaners. The filter bag can be washed in cold water in your washing machine with soap and small amount of bleach if the bag is not white. The filter bag should not be placed in the dryer and only left to air dry or it will shrink. The filter bag needs to be cleaned after each use of the Aqua Vac cleaner, do not leave a dirty filter bag inside the machine.