Hayward S210T932STL 21-Inch Pro Series Sand Filter System with 1-1/2 HP 2 Speed Pump and Twist Lock Cord Pro Series sand filter system is designed for quick assembly and precise alignment of system components Provides maximum flow energy efficiency and outstanding water clarity Filter base is molded of rugged thermoplastic for long-lasting, all-weather performance Features 7-position Vari-Flo valve provides maximum flow at low pressure drop Comes with 1-1/2-horse power 2 speed Power-Flo LX Pump and 3-inch twist lock cord; measures 21-inch size