The Intex Krystal Clear Sand Filter offers superb cleaning with easy maintenance and low operating costs. The filter sand only has to be replaced every five years. Six-way operating valve with ergonomic handle. Easy cleaning skimmer basket is built-in to prolong the life of the sand. Can be used with #20 grade silica sand (aka Sand) or ZeoSand (item #4429). Built-in GFCI, ground fault circuit interrupter, that instantly shuts off the pump if an electrical current comes into contact with water. 12 hour timer with 24 hour repeat cycle. 0.95 HP, 3000 GPH pump flow rate, 2450 system flow rate, 120 lbs. of sand.