Camco's Vented RV/Marine Double Side-By-Side Battery Box protects your RV/marine battery against collisions and contaminants. It stores (2) group 24 batteries and is compatible with 3/8-inch ring terminals on battery cables. A vented design expels hazardous gases, allowing you to safely hold your battery in storage compartments. The battery box features a positive and negative battery terminal with 3/8-inch studs. Product measures 17 5/8-inches x 15 ½-inches x 13 7/8-inches (including vent ports); 17 5/8-inches x 15 ½-inches x 11 7/8-inches (excluding vent ports). Includes: (1) battery box, (2) battery terminals, (1) hose, (1) hose mount plate, (1) louvered vent grille, foam tape, putty tape, (2) hose clamps, and mounting hardware. Meets U.S. Coast Guard CFR 183.420 and ABYC E-10.7 specifications.