Bose Professional Bose CB-MA12 Coupling Bracket

CB-MA12 Coupling Bracket: Joins two or more MA12 columns into one continuous array. Compatible with two or more MA12 modular column array loudspeakers.

Bose specifies it for indoor or outdoor and measures 8.0 in x 4.6 in x 3.1 in (203 mm x 117 mm x 79 mm). It ships under part numbers 028337 (CB-MA12, black), 028338 (CB-MA12, white).