Harris H1572230 Vortex 24 inch Above Ground Sand Filter System with 1.5 HP Pump **THIS ITEM IS NOT AVAILABLE FOR SALE IN THE STATE OF CALIFORNIA! ** The 24 Inch Filter is designed to work with water at temperature's from 32 degrees to 113 degrees fahrenheit 7-position dial valve with 360 degree rotation and flange clamp attachment Hydraulically balanced laterals to maximize water flow and filtration Always use #20 Silica Sand or ZeoSand