Ensure that your backyard swimming pool parts are functioning properly. For your sand filter be sure to use the Hayward SX310DA2 31-Inch Lateral Assembly with Center Pipe Replacement Part.This particular pool replacement part comes with the center pipe and measures 31 inches in length. It also features a lightweight design of just 3 pounds. Overall this replacement part fits with the Hayward Pro Series Sand Filter models S310T2 S270T2 S310T2 and S360T2Keep your swimming pool running properly with this replacement part from Hayward.