The companies name is Rack It!
You have added acouple of extra bars but its nearly identical overall.
I have had a couple of those for about 5 years and one of them may have saved my life and the other one tore up the bed of the truck pretty good.
I had a car in front of me crash and I swerved to miss and the guy behind me did too but he was carring 50 sheets of aluminum roofing and they tore through his 6 straps and if my rack hadn't stopped them they would have taken my head off.
The other one has been overloaded too many times and it has torn the bed below the rail on the sides just below the cab, I know it is my fault but just a warning about loading them up too much. It even has full length side rail caps between the front and rear posts.
Your design looks much stronger with the tube additions but its the bed rails that can't handle too much load.