The LB White Tradesman 170N Ultra Heater is a powerful 125,000-170,000 BTUs NG job site heater designed for use with natural gas. It features a diagnostic light for easy operation and includes a gas regulator. With a CSA certification for US and Canada, this heater is durable and efficient, producing a heated air output of 550 CFM. The lightweight design at 34 lbs makes it easy to transport, while its fuel consumption range of 125-155 cu.ft./hr ensures consistent heat for any project. Made in the United States by L.B. White, this heater is a reliable choice for businesses and industrial applications.