Camco's Large Battery Hold-Down Tray safely holds group 27, 30 and 31 automotive, RV and marine batteries to stop movement during transportation. The tray will fit batteries up to 12 11/16-inches (L) x 6 ¾-inches (W) x 8 ¾-inches (H). Product measures 13 1/8-inches (L) x 8 ½-inches (W) x 10 3/8-inches (H) and is constructed of heavy-duty, acid-defiant plastic with stainless steel hardware. Includes (1) tray, (2) rods, (1) cross bar and (2) knobs. This product meets U.S. Coast Guard CFR 183.420 and ABYC E-10.7 specifications when used with group 27, 30 and 31 batteries. Patented.