Sta-Rite PLDE36 System:2 Modular D.E. PLDE Series Pool Filter, 36 Square Feet, 36-72 GPM Inground pools and inground hot tubs Modular DE filter Durable two-piece tank housing constructed of rugged ABS thermoplastic to ensure a long-lasting tank life Posi-Ring closure provides safe, fast access to tank internal Allows for quick change of filter medias without changing the tank Measures 20-1/2-inch length by 37-1/2-inch height by 21-inch width