National Hardware N330-779 V805 Door Viewer in Chrome
This post contains affiliate links. As an Amazon Associate I earn from qualifying purchases Authorized Replacement for Stanley Hardware Stock #N330-779. 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