For anyone interested, there is a lab hood/ventilator up for auction at www.wisconsinsurplus.com
It is at auction 15002-26 General Public Consignment and is item number 12497
I am in no way affiliated with this auction house, but have bought from them before with no problems.
I use a smaller lab hood that I picked up on the cheap and it does a great job controlling casting fumes. I hooked up a flexible 6 inch hose and ran it out the window of my shop. Auction ends Jan 6
Happy New Year!