Schwank radiant tube heater natural gas, can be converted to propane
Model STS-JZ-80-N 80,000btu 18' of tube, and shield, coupler, and exhaust pipe included.
was removed from a commercial shop, but has been sitting in a home shop for 5-6 years and on the to-do list... never happened.
researched the model @2015
shayne 2503178411