OEM Tonneau Cover Side Rails

I bought a Toyota OEM hard tonneau cover used, but it didn't come with any hardware or side rails. Does anyone have a source?

 

I checked with Toyota as I am looking at a used OEM tonneau tomorrow and posted instructions and parts below.

Does it have the gutters?

While the instructions say it requires a the deck rail system, I don’t think you need them. If you had rails you would remove them and use the 5 bolts to secure the gutters and brackets on each side. Then you would re attach the rails to the lower notches on the brackets.

attached are the installation instructions I got from the dealer and another post on here. It may indicate part numbers for you to see what you need.