Show is Aerotech Herman Nelson's BT400 NEX-G2 heater. The “original” Herman Nelson heater has been in continuous production/improvement for over 60 years. The heaters are portable, engine-drive, forced-air and completely stand-alone (off the power grid). These heating units carry the OTL-Omni test lab product certification. The heaters feature safety-regulated appliances, quality, durability and unlimited dependability. For more information visit www.hermannelson.com.