Recent content by britaway

Hi All, I am installing a toilet in an old flat, an am unsure about the fan size, or how many to use. The room is 1 x 2m and 4m high. I was estimating about 40-60m3/h flow. The problem is that it is in the middle of the flat, and I need 8m pipe run with 4 elbows to get to the roof (outside...