TOA Electronics Flush-Mount Back Box for 900 Series In-Wall Mixer/Amplifiers

The TOA Electronics Flush-Mount Back Box is designed for flush-mounting a 900 series in-wall mixer/amplifier. It should be secured between two wall studs using the 12 included wood screws. The front surface should be flush with the wall. This back box is to mount the TOA In-Wall Amplifiers W-906 and W- BX-9F is for flush-mounting in any 4-inch wall.