This rack is heavy-duty, economical, light and can support up to 500 lbs. It permanently bolts to your truck bed for your carrying your wood, ladders and other construction materials and tools. Comes in a black powder-coated finish with all hardware, and it assembles in minutes. FeaturesEasy To Install, heavy duty, powder coated steel frameFits All Pickup TrucksMax Height: approx. 30\" (not including the height of your truck\'s bed)Top Mounting rack adjustable width: 42.1\" - 64\"9 (Overall)Bottom Rack Attachment Width: 47.6\" - 73.6\" (Overall)Base Dimensions: 14.17\"(L) x 2.36\"(W)Max Capacity: 650 lbs This listing is for set of 2 bars (front & rear)It is great for hauling ladders, lumbers, pipes, and other long & big items! All Dimension is manual measurement value which could exist a little error,Please understand and thanks for your kind support!