Sta-Rite S7S50 System:3 Sand SS Series Pool Filter, 2.4 Square Feet, 36-48 GPM System 3 SS-Series sand filter Filter has 2-2/5-square feet effective area and 2-inch tank port size Durable two-piece tank housing constructed of Dura-Glas, Sta-Rite industry leading glass-reinforced composite resin Posi-Lok clamps provide safe, easy access to tank internals Measures 27-1/2-inch length by 41-3/4-inch height by 27-1/2-inch width