The truck box is provided with a reduced clearance cover and a 90 degree cover opening. The mounting arrangement for the cover is offset from the back wall of the box. Thus, less clearance is required to accommodate the cover of the box in its open 90 degree position. The truck box is also provided with an access for electrical cord passthrough in one of its walls through which an electrical cord can be fed. As a result, power can be safely and easily provided to equipment positioned on the box.