Our Pre-Cut Marine Guage Mounting panel is made of HDPE 1/4" marine board. Our panel is strong, durable, and UV resistant. The panel will provide your new guages with a secure housing, while protecting your fiberglass from damage when mounting. Fits most standard marine guages and gps displays. White in color, wont fade. Creates a 1/4" solid and level platform for mounting new or old guages and accessory rocker switches. Panel includes (1) 90mm Opening for Larger GPS and RPM Display Guages and (1) 52mm circular openings for a guage including Oil Pressure, Volts, Radios, etc. The 2 precut 22mmx39mm (0.89"x1.53") openings fits most standard and universal marine waterproof rocker switches. Manufactured and designed in the USA! Great for use on all types of boats and Utilitity Vehicles. Switches and guages are not included and must be purchased serpately.