AQUA SIGNAL 3573001 SERIES 20 20502-7 STERN LIGHT. The light source is a highly efficient 5 watt halogen bulb that producees an intense beam while consuming less than . 417 amps at 12 volts. Housings are all molded of rugged glass-reinforced polycarbonate for physical strength , antimagnetic , UV resisitance and corrosion-proof durability. Unlike older styles, they'll look as good in years to come as they do today! There's a mounting configuration that's just right for every conceivable application, including yours. Deck mount lights are quickly and economically installed with the use of a single built-in molly-style fastener. A gasket with pressure-sensitive adhesive also serves as the drilling and mounting