If you do organic syntheses you will use and appreciate all that space. My hood is barely tall enough for a 600mm fractionating column with reflux
condenser/splitter.
Sorry to dig up this old post but I will need to operate the fume hood I built some years ago according to the dimensions you posted, right now it's a
plywood box and baffles coated with 2-3 coats of epoxy, the only thing that is missing is the sliding window. According to what you posted the
dimensions are as follows
box face dimensions
4' x 5' = 122 x 152 cm
window dimensions
48" x 41.5"= 122 x 105 cm
so there is a 47 cm bypass at the top or am I mistaken somewhere? Thanks.