- Outside Faceplate: 4-3/8" Tall X 3" Wide
- Inside Size: 6-1/4" Tall X 3" Wide
- Material: Brass And Steel
- For 1-3/8" To 1-3/4" Thick Doors
- 180 Degree Viewing Angle
- Used To Allow A User To Identify Visitors From The Security Of A Locked Door
- Two Note Mechanical Audible Door Chime
- No Wiring, Batteries Or Electricity Needed
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