Heats up to 2,500 sq. ft. Great for construction sites, workshops and open buildings. Provides direct infrared emergency heat, thawing and freeze protection and supplemental heat for large spaces. Lightweight for easy transport. Made with heavy gauge steel with cast iron burner head and stamped steel burner. High grade stainless steel emitter. Includes multi-port burner for even heat distribution and gas shut-off safety control. Expanded steel guard prevents accidental contact. Compact 14 diameter base for stability. CSA certified. UL listed. 1 Year Limited Warranty.