Prusa Pro HT90 Print Sheet / Plate Holder

You will need 8x M3x6mm screws and 8x M3 Voron Ruthex heat-inserts. 

Print 1x the plate holder and 2x the feet. The STLs are in the intended orientation.

The caveat is that the model is too large for the HT90 itself to print on. It is printable on a certain 256x256x256 build volume printer from a certain other vendor if rotated 45 degrees. And obviously it will easily fit on the XL. If using the XL you can assemble the feet and the holder in the slicer and won't need fasteners.