Pentair Sta-Rite S7S50-G System 3 SS-Series Sand Filter System 3 sand filter 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 27-1/4-inch length by 41-1/2-inch height by 27-inch width