- Precision Glass Lens
- Fits Doors 1-3/8" to 2" Thick
- 7/16" Diameter (12mm)

Installation Instructions:

1. Locate door viewer at desired eye level

2. Unscrew door viewer into outer tube and inside retaining ring.

3. Drill 1/8" pilot hole completely through the door.

4. Drill 7/16" hole halfway through door from each side.

5. Install lens tube from outside, tighten inside retaining ring.