Pentair 50181312 2-Inch Threaded Side Mount Multiport Pre-Plumbed Valve with Plumbing Kit Replacement Pool and Spa Sand Filter Side mount multiport valve kit replacement Fits Pentair pool and spa D.E. filters 125 GPM (2-inch side mount) 100 percent factory tested Site glass included; measures 20-inch length by 9-3/4-inch height by 14-inch width