The Premier® 80 2.0 portable heater offers the ultimate combination of efficiency and convenience. With an enclosed flame design this direct-fired portable heater combines 99% fuel efficiency with the convenience of heat that can be ducted up to 12 feet. Generates less than 70 dB of sound so you can comfortably have a conversation while operating. Operates from propane gas and produces 80,000 BTU per hour with 450 CFM of heated air output. Easily start from a reliable electronic ignition and manage temperature automatically with remote thermostat. Manufactured in Wisconsin from durable components to provide years of dependable performance. Backed by a 2-year warranty and lifetime of technical support. Heat Estimator Features Enclosed flame promotes safer work environments and provides option to duct 99% direct-fired fuel efficiency boosted by remote thermostat, and option to move air only like a fan Quiet with less than 70 dB operation Fits through standard 36" door frame while handles provide easy maneuverability Hose, regulator, and thermostat included Owners Manual