Small Battery Box Made of rigid polypropylene Impervious to battery acid Battery box comes with strap and stainless steel mounting hardware Inside battery compartment dimensions; 10-3/4&quot;&quot;L x 7-3/8&quot;&quot;W x 7-7/8&quot;&quot;H Outside dimensions; 13&quot;&quot;L x 8-7/8&quot;&quot;W x 10-3/4&quot;&quot;H