High-performance top-mount sand filter for above-ground pools, small in-ground pools, and aquariums * Corrosion-proof filter tank molded of color-fast material for long-lasting; 7-position vari-flo valve provides maximum flow at lower pressure drop * Durable; large pressure sand/water drain for rapid winterizing or servicing; round base included; all-weather performance * Flange clamp design allows 360-degree rotation for easy installation * Integral top diffuser ensures even distribution of water over the entire sand bed for maximum use of the filtration area