Lens Diameter: 9mm
Barrel Thickness: 12mm
Head Size: 16mm
Door Thickness: 38mm-63mm Door viewer with glass lens which allows the user to see out for 180 degrees. Can be used on front doors which vary in thickness between 38mm-63mm.
Black Door Viewer 180° (38-63mm Door) 90246 Our door viewers are a great addition to add extra security to any entrance doors.