The Camco Double Battery Box safely stores automotive, RV, and marine batteries. Made of heavy-duty, corrosion-resistant polypropylene, this box holds two 6V Group GC2 batteries or two 12V Group 24/24M batteries. The box's inner dimensions measure 21.5"L x 7.4"W x 11.2"H. Includes 2 straps and 4 strap clamps with screws. Meets U.S. Coast Guard CFR 183.420 and ABYC E-10.7 specifications when used with two 6V Group GC2 batteries.• Holds two 6V Group GC2 batteries or two 12V Group 24/24M batteries• Safe, durable construction• Made of heavy-duty, corrosion-resistant polypropylene• Inside Dimensions: 21.5"L x 7.4"W x 11.2"H• Includes 2 straps and 4 strap clamps with screws Includes 2 straps & 4 clamps with screws Meets USCG specifications when used with two 6V GC2 batteries