The author remixed this model.
Update 12/2023: I added a trim piece for the front side of the lid, including Patrick Dampc's minimalistic handle.
https://www.printables.com/model/565526-original-prusa-enclosure-minimalistic-lid-handle
Also featured on the picture are MichaelQ's sliding latches - no modifications here.
https://www.printables.com/model/557120-original-prusa-enclosure-slider-lock-latch
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When you turn the original metal lid upside down as you do when installing the hinged lid, the punched and threaded holes are showing on the outside, sticking out in a rather ugly way.
The trim pieces cover up the threads in the back and on the sides. I added all (five) necessary pieces to one print plate. You need 10 bolts M3 x 6mm to attach these, making sure the bolts don't stick out at the bottom.