Polished Solid Brass Housing And Glass Lens. Fits Doors 1-3/8 Inch To 2 Inches Thick. Offers 160 Degrees Lens Angle For Wide Viewing. 1-3/8" To 2", Satin Nickel Door Viewer, This Viewer Allows A User To Identify Visitors From The Security Of A Locked Door, Viewer Adjusts To Fit Doors From 1-3/8" To 2" Thick, Offers 200 Degrees Lens Angle For Wide Viewing, Includes 4 Precision Ground Glass Lenses, Carded.