As the ridiculous amounts of new F150's I see on the road I have had the hardest time finding an aftermarket / accessory dealer that caters solely to the F150. Everything I look for is universal, and I would really like something that is designed for my truck. After my leveling kit the next thing I would like to get is a tool box for the bed that sits flush with the bed rails and is hidden from plain sight. I have never purchased a toolbox so I have no idea what brands are good quality. My truck is black so also I would like to find one in black. Anyone else have a flush mount tool box or tool box brand they can recommend? Thanks.

 

I have a 2010 F150 regular cab with a below the rail tool box. It is a universal and fits just find. If you go to an auto parts store like Pep Boys they will let to take the box out and see how it fits before you pay for it

 

Finding something made specifically for the F150 is not really going to happen. Most companies realize that all of the full size light duties are within inches of one another and thus they make them for the masses. Below is an option that gives you some versatility.
This will work with or without a bed cover:
TonneauMate - The Perfect Mate For Your Tonneau Cover

Truxedo is a great company to deal with. I highly recommend their products. Two trucks now with two different covers of theirs and I'm pleased.

 

If you want it black, one option is to get it coated with line-x or other bedliner. Looks sharp and will be very durable.

I'm sure one of the universal fit ones will work for you. As has been mentioned, truck beds are very similar dimensions.

 

Search for my toolbox solution thread in this forum. Good pics in there.

My truck is the black one, and the husky job box fits amazing. 1" over flush, but u can't notice easily and it needs to be hinged over the box end so the lid can swing fully open.