I took the original and split it in half to be able to print it. Added two connectors to keep the two pieces together.
This model is 320 cm in length.
You will want to print it vertically like the STL is set up. The connection pieces might need to be adjusted to get a tight fit depending on how well calibrated your printer is.
You'll want to find feet that are 1cm wide to fit the flat section of the bottom.
Step file added so you can modify the length or angle of the wrist rest, or leave a comment and I can upload a version when I have time.
The author remixed this model.
I split the original model in half and added connection pieces to join the two