If you spend the effort in designing the parts properly you can set up a vent through a window in a permanent / removable fashion.
I have my 'make up air' coming in by opening the window at the back of torch bench just a smidgeon and although I did put a hole in my wall to route my 8 inch exhaust duct through I could have set up a pass through at the top of the window with ducting mounted outside to get the ten foot distance I needed to separate the intake from the exhaust.
ETA: I had to shop around for something called an "8 inch blast gate" so I could shut off the exhaust duct line to the outside so the house air doesn't pour out when I am not running my torch.
It's kind of like a guillotine and if you use gravity to close it you'll need a pulley system above it.
I didn't trust it to work on its side without jamming or wearing out.
I used a long length of braided picture hanger wire with a magnet tied to other end and just move the magnet closer or further away to open and close it. I have a metal hood so I have lots of places to stick it to.
__________________
The Zombie Apocalypse is Upon Us.
|