This Attwood Black Vented Battery Box is designed to fit Group 29/31 batteries, featuring four enlarged cable openings (.55" diameter) for easy wiring access. Constructed from durable polypropylene, it offers complete acid resistance, ensuring long-lasting protection. Large handles with rolled edges provide secure handling, while compliance with ABYC standard E-10 and USCG specification #183.420 guarantees safety and reliability. Mounting hardware is included for straightforward installation, making it an expert choice for marine battery containment.