The MB300W is a horizontal array kit for use with compatible speakers, such as the Sx100+, Sx300, or Sb122, to create a speaker array. It is designed to be used in conjunction with two MB200 U-bracket kits (required per speaker) and allows for two different splaying angles to either focus or widen the audio coverage. The kit is made of 10-gauge cold-rolled steel with a durable white powder coat finish.