hi, if the walls of my tent are sucked in when im using the fans does this mean its negative pressure and no smell would be escaping ? just wanted to make sure .. oh also does anyone have the airforce fans, i just wonted to make sure you are ment to leave the foam inside ? thanks alot.

yep, sucked walls = negative pressure.

As for the foam in your fans it sounds like it's just packaging to me. Not familiar with the fans tho.

If you mean the polystyrene inside the metal body of the fan then yes you leave that in place, I have a 4" and 6" airforce and I think you would wreck your fan trying to get it out.

If you mean this stuff, leave it in place it's ment to be there

it helps stop the noise , i think

get a pic of what you mean

ye thats great thanks alot, at first i thought it was packaging but now it makes scence, there bloody powerful little fans to !

ye sound insulates mate...aka stops the sound.....they are bloody good tho....proper