Need some advice to install Thule TracRac base rail

[New owner]

Hi

Got my 2021 short bed Supercrew F150...
Waiting my Thule rack that goes over the bed to install my tent. The rack goes on a TracRac rail base that is fix with a rubber anchor system in the « squares cover by plastic lid » that are on each side of the bed sides.

But I realized today that my new F150 short bed has only one of theses square on each side,close to the tailgate...nothing in the middle or close to cabin ?? Do you know if there’s other square under the plastic cover?

thule rail:https://cdn1.static-tgdp.com/assetloader.axd?pimid=21508&id=594036&brand=Thule&market=CA&att=1

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[Mash150]

They are there at the front of the box. Except they are covered by the plastic rail. You will need to cut them out through the plastic.
Ford makes this to assist in getting a smooth cutout around the stake hole.

 

[New owner]

They are there at the front of the box. Except they are covered by the plastic rail. You will need to cut them out through the plastic.
Ford makes this to assist in getting a smooth cutout around the stake hole.

thanks! Is there one in the middle as well? How do we know where they are exactly?

thanks

 

[Mash150]

thanks! Is there one in the middle as well? How do we know where they are exactly?

thanks

No middle, it would likely be on the 8 foot box. On my 2018 , 6.5 box , you can see them from under the truck. For reference, it’s three inches from the inside front of the box, to 5.5 inches

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