Hayward Auto Skim Series Automatic Pool Skimmer and Cleaner with Self Adjusting Weir, Float and Bypass Valve, and 2 Inch Female Iron Pipe, White Crafted to make pool maintenance upkeep and a breeze, helping you streamline cleaning process to save you time and energy and increase hours of fun in the sun Snap-in weir adjusts automatically to 4.5-inch variation in water level and stackable notched extension collar allows infinite vertical adjustment providing utmost flexibility Provides exceptional piping versatility with 2-inch female iron pipe threads while optional float/by-pass valve gives a suction outlet through skimmer system Suitable for in-ground, vinyl, fiberglass, residential or commercial pools which also includes 3/4-inch auxiliary knockout port that can act as a pool overflow fill line Comes with with float valve and equalizer kit to meet specific NSF commercial requirements; Dimensions measure 12 inches long, 19.4 inches wide, and 20 inches tall