Attwood Heavy Duty Adjustable Battery Tray Attwood Heavy Duty Adjustable Battery Trays are made of heavy-duty, non-corrosive, black plastic. These trays can extend up to 9-12, making it ideal for trailer batteries. Contains no metal parts to corrode and no webbing straps to fade. Includes adjustable-height crossbar and 2 retaining bolts. Ergonomic nuts and bolts easily secure batteries. Meets ABYC Standard E-10 and USCG requirements Description Inside Dimensions Battery Series 24 Series Battery