Sta-Rite S7M400 System:3 Modular Media SM Series Pool Filter, 400 Square Feet, 50-115 GPM System 3 modular media SM-series cartridge filter Filter has 400-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-inch length by 40-1/2-inch height by 27-inch width