For Aqua Products cleaners still under warranty, this certified Aqua Products 2 micron fine filter replacement bag must be used when replacing the filter bag to prevent voiding the warranty. For use with single-bag Aqua Products cleaners including Aquabot, Pool Rover, AquaMAX Junior, UltraMAX Units, and AquaFirst In-Ground Cleaners. Easy to remove and clean. Elastic band opening fits around existing plastic frame.