Injection molded polypropylene plastic boxes effectively collect battery electrolyte, allow ventilation, and prevent accidental contact of ungrounded battery terminals. Patented Snap-Top lid secures the lid to the base, heavy-duty handles resist cracking, and vent hole cover plugs limit water entry. Includes mounting hardware and instructions. Fits 12 Volt batteries. Standard box fits Group 24 batteries. Dimension: Inside (11.00?L x 7.87?W x 9.75?H), Outside (13.38?L x 10.13?W x 11.00?H)