The Pentair 170022 Tank Lid Assembly is an essential component for HVAC systems, particularly for pool and spa filtration equipment. The dimensions of this tank lid assembly are 20-1/2" in length, 20-3/4" in width, and 25-1/4" in height. It is designed to fit over filtration tanks firmly and create a tight seal that guarantees optimal system performance. Because it is made of sturdy m... https://www.usapoolshop.com/170022-pentair-tank-lid-assembly-60-sq-ft