This is a top cover for the BentoBox by thrutheframe to incorporate a thermostat switch I had laying around. At 30°C the fans for the BentoBox turn on. Be sure to by the NO Normally Open switch, so the fans turn ON at 30°C, see the description in the link below.
https://nl.aliexpress.com/item/32369436039.html
No need for supports. I printed the cover in PETg with the default 0.2 Standard settings in Bambu Studio.
The author remixed this model.