The ventilation is way in the back, where the three white things are visible, right behind my fabulous swarovski and flower glitter lamp ( I love that lamp!!!) We've managed to get a proffessional vent box thing wich is usually used to vent an entire three story house, and it was hidious to look at, so we made wood panneling around it.
The measurements are 13.1 by 13.1 ft, and it's 10.8 ft high
