Rockwood 627.CRM Brass UL Listed 190-degree Door Viewer with Heavy Duty Privacy Cover for 1-3/8" to 2-1/4" Doors, Bright Chrome Finish Brass door viewer with a 190-degree viewing range and a bright chrome finish Heavy-duty privacy cover to prevent visibility from the outside to the inside Meets ANSI A156.16 specifications and is UL fire rated for up to 1-1/2 hours For use in a 9/16" diameter hole in doors 1-3/8" to 2-1/4" thick