Sta-Rite S7MD60 System:3 Modular D.E. SMD Series Pool Filter, 60 Square Feet, 60-120 GPM System 3 modular SMD-Series D.E. filter Filter has 60-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 28-inch length by 41-1/2-inch height by 27-inch width