i am installing the chamber fan so needed somewhere to move my hygrometer and i really liked the design i remixed for but wanted it for my square hygrometer so i tinkered this design to print in petg.

Internal dimensions are 46.6mm x 26mm which fix my hygrometer a treat and as it was print face down the layer lines help it click in when insert.

This will sit in place and not get knocked by the extruder on nozzle clean, i also add in some tape but not sure you need it.

Will print in place with no supports but could potentially add in supports for the angles if needed.