Battery boxes meet ABYC Standard E-10 and U.S. Coast Guard Specification Number 183.420 as an OEM-installed battery hold-down system. Polypropylene construction for total acid resistance. Hold-down straps resist 350lb. of force, nearly four times the USCG requirement. Battery boxes are drop tested in temperatures ranging from -20 to 120 Deg F. Mounting hardware is included.Four cable openings, enlarged to 0.55" diameterLarger handles with rolled edgesInstructions molded inside coverIncludes UPC labelBlack color non-vented style