Apollo™ Monoblock & 4 Channel Marine Amplifier Mounting Bracket Use this mounting bracket to easily install your Apollo Monoblock or 4 channel marine amplifier. Simply secure the mounting bracket to a flat surface and clip the amplifier in place, for a clean and tidy finish.  Technical Specifications: * Dimensions (WxHxD) - 4.72' x 6.08' x .39' In the Box: * Mounting bracket * Four 8-gauge, self-tapping screws *Sold as an Individual Warning [https://productimageserver.com/prop65/6pt.png]WARNING: 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 [http://P65Warnings.ca.gov].