For the ultimate in custom appearance, use this flat-mount glass helm option. This kit mounts your GPSMAP 8012/8212 multi-functional display (MFD) into a flat panel, giving your boat a beautiful, sleek glass helm. Includes hardware, installation instructions and a template.NOTE: This type of mounting requires full access to the back of the mounting surface, and the ability to precisely cut or fabricate the mounting surface to complete the installation with the desired appearance. Professional installation by a technician or company with dashboard modification experience is highly recommended.