Attwood Battery Box With Strap And Mounting HardwareAttwood vented battery boxes meet ABYC Standard E-10 and US Coast Guard Specification Number 183.420 as an OEM-installed battery hold down system. Features polypropylene construction for total acid resistance. The hold-down straps resist 350 lbs. of force, nearly four times the USCG requirement. Battery boxes are drop tested in temperatures ranging from -20 F to +120 F.Features: 4 cable openings, enlarged to .55" diameter; Larger handles with rolled edges; Instructions molded inside cover; Mounting hardware included; Dimensions:9065-1 (Series 24 Batteries) Inside Dimensions w/ Lid: 11-/8" L x 7-3/4" W x 10-1/8" H; Outside Dimensions w/ Lid: 14" L x 9-5/8" W x 10-5/8" H; 9067-1 (Series 27 Batteries) Inside Dimensions w/ Lid: 13-7/8" L x 7-1/4" W x 10-1/2" H; Outside Dimensions w/ Lid: 16-7/8" L x 9-5/8" W x 10-7/8" H;