First time buying from here and will definitely do it againOn 09/09/2018 by D. A. (verified customer)
Temperature Knob, Hot Spring, Black,1-1/2in, Pre 1988Item #: 20309
Control panel black colored temperature knob (dial) used to adjust the temperature on the Hot Spring models prior to 1988. It has a 1-1/2″ long stem which inserts into the back of the control box and turns the D-shaft of the thermostat.