Hello m'y room is 100x100x200 cm
If I put a 150m3/uur fan as in the photo is this sufficient as an air inlet?
I have an adjustable 400m3/ur extractor with carbon filter in the room
If you can create negative pressure then you don't need that fan at all as it will draw air in, you could maybe add a fan to the internal side of that hole to spread round the fresh air inside