Chamberlain 41B873 Garage Door Opener Sun Shield Genuine Original Equipment Manufacturer (OEM) Part LiftMaster, Chamberlain, Sears Craftsman, and Chamberlain brand garage door opener safety sensor sun shields. These cardboard safety sensor sun shields are used to prevent sunlight from shining into sensor causing accidental reversal of garage door. ONLY compatible with 41A5266-1 safety sensor brackets. Includes one pair.