New Hayward S180T Pro Series Top Mount InGround Swimming Pool 18" Sand FilterIn ground pools of all types and sizesIn ground spas (residential or commercial)Water features (fish ponds, fountains, water gardens)Integral Top Diffuser ensures even distribution of water over the top of the sand media bed.Full size internal piping gives smooth, free flowing performance.Integral Molded Drain Plug for easy draining of tank, without the loss of sand.Flange Clamp Design allows 360 rotation of valve to simplify plum...