When it comes to protecting your Series 27 battery, you cant beat the Power Guard. It combines acid-proof materials with performance specs that meet or exceed U.S. Coast Guard standards. Vented design with comfortable, rolled-edge handles. Attwood Corporation has been an award-winning leader in engineering, testing, and manufacturing the highest quality marine products for over 100 years. We deliver safe and reliable lighting, fuel systems, water systems, seating & pedestals, swim ladders, custom upholstery, and general marine accessories that are easy to install and meet regulatory compliance.