Unbranded 4-in Antique Brass Door Knocker and Viewer

Used on entry doors to provide privacy while viewing from inside the home, and also as a decorative door knocker for visitors. Requires 1/2-in diameter bore hole for viewer, installs on 1-3/8-in to 1-3/4-in thick doors. Diecast construction, antique brass finish. Installation fasteners included. Manufacturer part number MP4228.