Lo-Side Truck Tool Boxes mount over the bed rails of your truck and keep critical tools and parts at your fingertips. The Model 300300-9-01 is an aluminum diamond plate standard length low side truck bed tool box and has a storage capacity of 4.4 cu ft. Mounting brackets ensure an easy installation without drilling into the rails. WEATHER GUARD® DEFENDER SERIES™ pickup truck tool boxes come with a Seven year warranty.