The PresAir Trol flush air button in white is built for compatible 1-3/4 inch hole-size installations and offers a clean, simple look for pneumatic bath and spa control systems. A fresh air button can make a noticeable difference when the old control has become worn or dated.This replacement is especially useful when the original button is cracked, discolored, or no longer feels dependable during normal use. The white finish works well in installations where a lighter, more understated trim appearance is preferred.It is a practical service part for restoring both function and a cleaner finished look at the control point. PresAir Trol flush air button in white For compatible 1-3/4 inch hole-size applications Helps restore responsive pneumatic control Useful when the original button is worn or faded Supports a clean, refreshed appearance after service