And http://KurtShafer.com, for my personal life and for other inventions. 

INVISCO OFFERS FANS FOR HOMES AND INDUSTRY

Whole house fans – attic mount and rooftop mount – http://thorwaldsonwholehousefans.com/

Hybrid rooftop ventilators – https://inviscoindustrial.com/

INVISCO OFFERS GARAGE DOOR WINDOW KITS

Garage door window kits –https://www.garagedoorwindowkit.com/