On Mon, 05 May 2008 22:12:40 +0100, James wrote:

Forgot to add: Found this on my travels
http://www.omegawolf.co.uk/powercraft/ the 270 turns out to be 9.5CFM so
pretty good.

Did you know Google can do all that sort of thing for you?

http://www.google.co.uk/search?q=270...cubic+feet+per
+minute

answer:
270 (litres per minute) = 9.53496001 (cubic feet) per minute