attwood 9067-1 Heavy-Duty Acid-Resistant Power Guard Series 27 Vented Marine Boat Battery Box, Black Extremely tough; drop-tested in temperatures from -20F to +120F degrees and completely resistant to acid Meets ABYC and U.S. Coast guard standards as an original equipment Manufacturer (OEM) Battery hold-down System Durable straps withstand 350 lbs. Of force-nearly 4 times the Coast guard Requirements For series 27 batteries (10-1/2 inch maximum height) Attwood develops high value, engineered marine products to make life on the water easier to enjoy New larger capacity! Vented black battery box for series 27 batteries. (10-1/2" maximum height) 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 350 pounds of force, nearly four times the USCG requirement. Battery boxes are drop tested in temperatures ranging from -20 Degree F to +120 Degree F Mounting hardware is included