ATB4 - 20" H x 14" D x 60" W - Aluminum Top Bottom Utility Truck Toolbox, HD, All Smooth Body, Diamond TP Lid and Door, Single Top Open Lid with Gas Springs, Single Drop Open Door and Lock.

Heavy Duty Top Bottom Utility Chest Box, with Top Lid and with Bottom Drop Open Door. Top Bottom Box is designed Heavy Duty for Installing in a Truck Box, or on a Flat Bed making Storage on your Truck or Flatbed easy. The Top Bottom Box is easily mounted to Truck Box or Flatbed and can be mounted behind the Cab.

Installation Instructions and Mounting Kit (M3200D) Comes with Box. 

For Installation Instruction see our Installation Catalog

Description Sheet: http://www.protoolboxes.com/images/PDFD/Page 37.pdf