I think i may have went slightly overboard on the ventilation! switched the fan on to test it (arrived today) next thing i know, everything on the couch is on the floor!!! I'll be lucky if this beast doesnt throw the contents of my shed into the garden once its installed!
Lol!!! Better dress up warm when you torch!
lol i think i may have got just about the same ventilation you had but for a 10x6 shed! lol I'll have to put more weight on so the bloody thing doesnt sook me up n deposit me in the garden with the rest of the sheds contents!
on the plus side at least ill not be breathing in anything harmful :P