Attwood Battrey tray HD 12-5/8"x7-1/4"x8.5" adjustable non-corrosive black plastic

Adjustable Battery Trays
Lightweight, heavy duty corrosion-resistant polypropylene, non-corrosive black plastic. 
Includes adjustable-height crossbar and two retaining bolts. 
Trays are designed to secure your battery. 
Meets ABYC Standard E-10 and U.S. Coast Guard requirements. Patented design. 
Install with #10 screws.
It fits most 24 Series batteries

Suitable for Vetus VEAGM 70 & 24 and 24M series Attwood batteries
Inside Dimensions: 12-5/8" x 7-1/4" x 8-1/2" (320.67x 184.15x 215.9 mm)

CAUTION : Battery must be located in a well ventilated area to prevent buildup of explosive gasses. To prevent acid burns, locate in an area away from casual contact.