Nope, 11 Gage (1/8 inch). I felt like 16 Gage (1/16 inch) would be a little on the thin side. After the bed is complete I will weigh the truck to see if it went on a diet or gained a Christmas pound or two. With the wood and 1/2 a tank of gas the truck weighs in at 5000# with 50/50 balance. Sometimes it feels like I'm driving a high end sports car......or not.
Rob