Compact heater

The Tradesman® 400 Ultra DF portable forced air heater from L.B. White Co. Inc. is a compact 400,000 BTU/h dual fuel (LP/NG) heater that weighs 55 pounds and is 35 inches long. Heater output can be adjusted from 400,000 BTU/h down to 250,000 BTU/h for LP and down to 170,000 BTU/h for NG. Variable output means fuel savings on the job, and the heater is direct fired, with more than 99 percent combustion efficiency. Made in the U.S.A., the heater features a single lever to change from propane to natural gas, a thermostat to keep any work environment comfortable and a unique three-trial ignition system to ensure the heater will light under adverse conditions.