Sta-Rite S8S70 System:3 Sand SS Series Pool Filter, 3.4 Square Feet, 51-68 GPM Sta-Rite System 3 SS-Series sand filter Filter has 3-2/5-square feet effective filter area and 2-inch tank port size Durable two-piece tank housing constructed of Dura-Glas, Sta-Rite industry leading glass reinforced composite resin Inground pools, inground hot tubs and water features Measures 30-1/2-inch length by 41-3/4-inch height by 31-inch width