This air button fits in a 1-3/8" hole. Len Gordon lists this button's range as 15 feet for a latching air switch and 150 feet for a momentary air switch, this air button is suitable for a spa or jetted bathtub. This button is available in many colors.
It is important to note that the main body and the colored trim are sold separately. You need to order the body and a trim kit to make a complete button.