The Attwood Power Guard 27 Battery Box offers a new larger capacity with 10-1/2" maximum height. This vented black battery box is designed to fit Series 27 batteries.• Meets ABYC and USCG specifications as an OEM-installed battery hold-down system• Polypropylene construction for total acid resistance• Hold-down straps resist 350 lbs. of force• Drop-tested in temperatures ranging from -20°F to 120°F• 4 cable openings, enlarged to .55" diameter• Larger handles with rolled edges• Instructions molded inside cover• Mounting hardware included• Inside Dimensions: 13-7/8"L x 7-1/4"W x 10-1/2"H• Outside Dimensions: 16-7/8"L x 9-5/8"W x 10-7/8"H Meets ABYC & USCG specifications as an OEM-installed battery hold-down Polypropylene construction for acid resistance 4 large cable openings & larger handles with rolled edges | Attwood Power Guard 27 Battery Box in Black