The Wiremold Co - Wiremold 5737AWH 500/700-Series Open Base Extension Box Fitting

Small surface non-metallic raceway system is the ideal choice for a homeowner that wants to extend circuits or communication cabling in their home. Surface non-metallic raceway allows you to add fixtures and outlets without disturbing the drywall, plaster or insulation in your home. The leading choice of professionals is now available for your DIY project. Features: Mounts onto 3 1/4'' or 4'' (83mm or 102mm) conduit boxes, 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). - Certifications: RoHS Compliant; NAFTA Compliant; cULus Listed