Broan-NuTone IRAD500 Recess Mounting Frame for AD500 Broan-NuTone IRAD500 Recess Mounting Frame for AD500 Features: • Recessed MountThe cabinet can be mounted recessed using the accessory trim-ring (P/N IRAD-500). The trim-ring mounts in the wa ll and the cabinet attaches to the trim-ring. Identify the location of any studs in the wall. Cut a 13" high by 11" wide rectangular hole between studs at the mounting location. Install any additional mounting material required to provide surfaces in side the wall 11" apart for attaching the trim-ring. Place the trim-ring in the wall hole. Check for level, then attach the trim-ring with up to six screws into the side tabs. Drill 3/16" holes in the cabinet`s six pre-marked location. CAUTION: After drilling, remove any metal clips from the inside of the cabinet. Route the wiring through the trim-ring and into the cabinet through the center wiring hole. Attach the cabinet to the trim-ring using self-tapping screws supplied. Replace the circuit board and plug in each wiring connector. Be sure to replace the green ground wires. • Trim Ring Rough-I