Invisco LLC is a limited liability corporation formed by Kurt Shafer.

Kurt has several inventions that are now products.

Whole house fans – attic mount and rooftop mount – http://thorwaldsonwholehousefans.com/ Hybrid rooftop ventilators – https://inviscoindustrial.com/ Garage door window kits – https://invisco.fwscart.com/Garwins/cat6459167_4749396.aspx