I had my windows closed with two magnets at each side but when printing infills at high speeds the windows bounced and didn't stay still. This is a simple design to be screwed at the middle of the enclosure and close the window using two magnets.
I used two 3,5x20mm screws and 14.5mm diameter magnets (3mm high).
Supports are not needed.
The author marked this model as their own original creation.