Some recent additions to the pile. The roof exhaust fan goes for about $1k new per model #. No idea whether it still works. Should I scrap, save, break down, or resell? :
Greenheck+Roof+Ventilator+1%2F4hp+Exhaust+Fan+115v+Gb-071-4x-qd-r3 for sale online | eBay
Greenheck G-095-D-X Down Blast Exhaust Fan
Greenheck GB-101-4-X Centrifugal Upblast Exhaust Fan