Dog box width on the bed rails is 68 inches. Box on the bed rails is 79.5 inches long. It measures 23 inches from bed rail to bottem of the box that sits inside the bed. Box sits inside the tail gate and is 59 inches wide at tail gate. Box was made for a Tundra and has also been used in my Dodge Megacab with a short box. I had to add some boards to my bed rails to use in the Megacab.
Box has three lockable doors and each is its own compartment. The top has a rail all the way around so you can put spare tire, coolers, tool boxes etc up there. There are also six rigging loops for dog on top. Box has two adjustable vents on each side and a drop door on each side for added ventilation. Very strong and well built box by Highway Products. Box sells for $5500+ new.
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