Fan duct for Bentobox. 12mm hole for round switch.

I use the backlit switch purchased from Amazon and power by the 24V PSU unit.

It is specific to Bambulabs removing not utlizied screw positions and only having rear cable exit when placed on the left hand side of the printer.

Link to switch https://www.amazon.se/dp/B09WV5CLZT?ref=ppx_yo2ov_dt_b_product_details&th=1