Stl Ext. Box Open Base White

Mounts onto 3 1/4" or 4" (83mm or 102mm) conduit boxex, or other recessed outlets. Cover accepts devices with mounting screw centers of 2 3/4", 3 1/2", or 4 1/16" (70mm, 89mm, or 103mm). Can be used with 5736 Blank Cover as a pull or junction box. Outside diameter 5 1/2" (140mm).