Designed to easily fit on motor boats and meet the strict requirements for recreational boats operating between sunset and sunrise. Aqua Signal Series 22 Navigation Lights are made for powerboats and sailboats up to 39 in length. The screens are made from brushed stainless steel so they will last longer and wont corrode due to seawater. With housing built from high-quality polycarbonate, these lights are impact and shock resistant. Optics comes with a Fresnel lensing system and impact and high-quality, impact and shock resistant plastic. Key Features Housing cases are made from glass-reinforced polycarbonate for durability Housing is non-corrosive, non-magnetic and seawater resistant Optic casings are made from high-quality, impact and shock resistant plastic for toughness Comes with self-adhesive gasket and special dowel included mounting hardware All lights come with a protection rating of IP45 and are USCG approved