Stanley #610470 Brass Wide Angle Door Viewer Authorized Replacement from National Hardware Stock #N158-907 Offers 120 degree lens angle for wide viewing Includes precision-ground glass lenses; Polished solid brass housing Fits doors 1-3/8 inch to 1-3/4 inches thick Requires 9/16 inch hole Polished solid brass housing Includes precision-ground glass lenses Offers 170 degree lens angle for wide viewing Lifespan Limited Lifetime Warranty Fits doors 1-3/8 inch to 1-3/4 inches thick