audio source bc5 new construction bracket in-ceiling 5.25 inches mount
audiosource new construction brackets for speaker installation are made from ultra-sturdy molded abs plastic with snap-on adjustable aluminum mesh wings . the bc5 in-ceiling construction bracket is built for up to 24 joist centers and has an inside diameter of 6.63 . this construction bracket fits audiosource ac5c and ae5c in-ceiling speakers .