attwood 9069-1 Standard Acid-Resistant Series 24 Non-Vented Marine Boat Battery Box, Black Polypropylene construction ensures complete resistance to acid Extremely tough; drop-tested in temperatures from -20F to +120F degrees 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 Designed for standard batteries, series 24 (10 1/8 inch max height)