Narrow Battery Holder Tray For tight-space installations Manufactured by T-H Marine, Model # NBH-29S These battery trays are designed to have the absolute smallest dimensions possible for mounting batteries in tight spaces. These trays eliminate 1 1/2" - 2" of space when mounting trays side-by-side. This space saving was accomplished by eliminating the external mounting tabs and moving the mounting holes into wells enclosed in the tray walls. Molded of acid proof polypropylene with stainless rod hold down. Meets NMMA specs for battery retention.