The MBA Metal Back Box is for variable width framing, hat channel, and metal studs. This back box has an adjustable width from 9-1/2” (241 mm) to 14-1/2” (368 mm) and should be installed before wallboard is hung. Back boxes should be insulated before speakers are installed. Two knock-out ports are located on top and bottom of the box. Self-adhesive Dynamat insulation is included to seal the seam between the two overlapping sides of the box. Must install PlaceSaver over MBA to ensure proper rough opening.
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.
