Exclusive D.E. cartridge element ensures even water flow and uniform distribution of D.E. for optimum filtration efficiency more dirt is trapped per cycle * Standard High Flow manual air relief valve and continuous internal air relief work together for superior filtration efficiency * Fiberglass-reinforced polypropylene tank for strength, durability and long life * Lock ring with spring-loaded safety latches provides positive secure lockup, quick and easy servicing * Measures 14-inch length by 42-inch height by 14-inch width