This part is aTop Draw Style Air Control with a Smooth White Top that measures about 2" wide it requires a 1 1/8" wide hole in the tub to be mounted and accepts a 1/2" slip pipe or fitting in the bottom.
There is a similar version of this Valve that is larger Click here for that valve: Air Control Valve 1-3/4" Hole Size , 2-1/2" Face Diameter, Smooth White, 1"
