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Authorized Replacement for Stanley Hardware Stock #N330-712
Used to allow a user to identify visitors from the security of a locked door
Fits doors 1-3/8 inch to 2 inches thick
Offers 160 degrees lens angle for wide viewing
Requires 1/2 inch hole
Includes four precision-ground glass lenses
Solid brass housing
Viewer adjusts to fit doors from 1-3/8-Inch to 2-1/8-Inch thick