Adjustable metal back box
The versatile, UL listed MBA back boxes are built to adapt to whatever framing configuration you may have on the job site. MBA back boxes are recommended for installations:
1. Where the space behind the speaker is open;
2. Where a metal closure is required and the mounting distance between the framing members is less than 16” (406 mm) on center;
3. When using metal studs or hat channel/suspended hard lid ceilings.
MBA series back boxes are constructed of 1.1 mm thick metal and are shipped unassembled, ready for your custom configuration needs and UL listed. Convenient 1/2” (13 mm) and 3/4” (19 mm)knockouts for conduit are provided.
Screw package and foam pads
Dynamat adhesive box insulation
3/4” (19 mm) x 1-1/2” (38 mm) metal mounting angles.
Specification Sheet: Download PDF