You don't want your marine battery rolling with the waves. Secure it with Extreme Max's heavy-duty tray and strap. Custom designed to fit series 24 batteries (11" x 7-1/8"), this sturdy tray has reinforced corners to protect and secure battery. Polypropylene construction protects against battery acids and other damage. Eight mounting holes for simple installation. The adjustable heavy-duty strap allows you to secure and release your battery quickly and easily, even in limited spaces, with the security of 300 lbs. of breaking strength.