Spule 4,
To clear up a possible misunderstanding, the fume hood was a totally enclosed, with door, bio box that was never used, approx, 3' wide 2.5' high and 2' deep.
I cut the top out of it and laid it on it's back, added a filter rack and used an out of air stream, non sparking fan from an old paint booth. I haven't bothered running
air flow readings on the opening as the capture velocity seemed good enough for casual/occasional use. The hood/booth is made from clear Acrlyic but again all I will
be using it for is water based products. One thing about it, it lets in a lot of light.
Later
Rick Marty