Apollo(TM) Zone Marine Amplifier Mounting BracketThis mounting bracket is essential for installing your Apollo Marine Zone Amplifier correctly. Simply secure the bracket to a flat surface and clip the amplifier in place, for a clean and tidy finish. Technical Specifications:Dimensions (WxHxD) - 3.94" x 3.94" x .3"In the Box:Mounting bracket*Sold as an IndividualWARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.