This is a vent cover I made it work well with me using the vent full time I have a 15cm wide vent and a 120mm fan https://www.amazon.com.au/dp/B0CNR786Q5?ref=ppx_yo2ov_dt_b_fed_asin_title

The reason why I have hot glue is because the full module was to bit to big for my 3d printer