McBride back boxes are rust resistant and made of heavy gauged galvanized steel. All SMC series back boxes have a satin white baked powdered epoxy finish. The SMC20E is a surface mount square back box that can be used with our square baffles.
Model Number: SMC20E
Overall Width: 12 7/8"
Mounting Hole Dimension: 11"
Overall Depth: 4"
Compatible Baffles: MC25, MC25NP, MC25P, and MC25SQ