McBride back boxes are rust resistant and made of heavy gauged galvanized steel. All SMC series back boxes are finished with a satin white baked powdered epoxy finish. The SMC40E is a surface mount square back box that can be used with the MC70 square baffle.
Model Number: SMC40E
Overall Width: 6 5/8"
Mounting Hole Dimension: 4 3/4"
Overall Depth: 4"
Compatible Baffles: MC70