Ideal for trunk mounting of your Optima battery, these billet aluminum battery boxes are manufactured for the popular Optima 34 series battery (measures 10”L x 6.8”W x 7.8″H). The box features a ball milled full top mount and base. The kit includes billet aluminum mounting posts and stainless steel fasteners. The bottom is drilled for four 1/4 mounting fasteners (not included). Available in raw machined or highly polished finish or in a variety of Fusioncoated colors.