This new laser-cut stainless-steel amplifier mounting bracket kit from J&M has been designed specifically to provide a solid and secure mounting position while blocking amplifier heat from being transferred to the radio. This versatile mounting kit may be used to mount any past or current J&M 2 or 4-channel ROKKER XT or Performance Series amplifier, along with many other brands/models available Amplifier dimensions that fit: 10 5/8" Long X 5" Wide X 1 5/8" Tall (Do not exceed) Kit includes all necessary mounting hardware & complete installation instructions