Fits all group U1 battery group sizes,Fits all new orbital or spiral celled, deep cycle, high performance batteries,New convenient battery box application guide,QuickLock„Copper Cover - Easy-on and easy-off,Safe and secure,Convenient, fast, durable,QuickLock„Copper prevents cover loss,Use hold-down holes molded in to reinforced handles,Use J-hooks, L-hooks, threaded rod or lag bolts,Remove the lid while keeping the box secure,New Tougher Material - Impact resistant to -30°F (-34°C),Heat stable to +200°F (+93°C),Meets U.S. Coast Guard Regulations 183.420 and ABYCE-10.7,Impervious to acid, gasoline, oil and solvents,Will not rust, UV protected,Length: 10-3/4 Inches (27.9 cm),Width: 7-1/2 Inches (19.31 cm),Height: 8-1/2 Inches (26 cm),Length: 8 Inches (20.3 cm),Width: 5-1/4 Inches (13.3 cm),Height: 7-15/16 Inches (20.1 cm)