Model L225C-7C Laser Series Sand Pool Filter by Carvin Pool Equipment for In-Ground and Above-Ground Pools FEATURES: Upper distribution system integrated into the dial valve and engineered to direct water evenly across the entire surface of the sand - up to 25gpm/sq.ft. without sand migration or channeling Non-Corrosive resin clamp for simple installation and service of the dial valve and filter components Underdrain with "side-slotted" laterals draws water evenly across the full diameter of the sand bed for higher flows and better filtration Heavy-duty freeze resistant hub and easy-service "Snap-fit" laterals Deep high-capacity sand bed carries more debris and extends filter cycles Blow-molded tank is corrosion-resistant and UV-resistant 7-way dial valve with "sight glass", automatic air relief, and pressure gauge Bottom drain for winterizing and draining Hose and hardware included