My 2008 XLT has 6 paired holes about two thirds of the way up in the bed. There are three pairs each side, each hole is roughly 6 inches apart from the other, and each hole is about a quarter inch in diameter. They don’t appear to have a threaded nut on the back side.

I thought they might be for some type of rack or rail system, but I have been able to find anything that looks like it would fit.

What are these holes for?

 

My money is on it being something a previous owner installed and removed prior to selling the truck.

 

doesn't really matter unless you plan on hauling ponies or whatever they did. At first I thought you had holes in the side of the bed but then realized you meant inside. Are they wide open meaning can you see right through them.

 

The answer is in the related thread that loaded below...