Primex XR Classic Series Install Manual page 28

How to install a Flush Mount Digital Clock/Timer
1. Cut a hole in the wall surface that is 5.4 inches (13.71 cm) x 14.4 inches (36.57 cm) between two studs.
NOTE
Clearance within the wall should be at least 2.5 inches (6.35 cm) deep to allow for the clock assembly.
2. Secure a standard 2x4 cut to 14.5 inches (36.83 cm) between the two studs located 0.5 inch (1.27 cm) above the top of the
bottom of the opening and 2.4 inches (6.0 cm) from the front of the opening.
3. Mount the junction box(es) as specified below.
Digital Clock Model: Mount one junction box in the center of the opening and flush with the front side of the 2x4.
l
28
XR Classic Series Digital Clocks/Timers Install Guide