Heats up to 21 cubic meters. Swivel regulator and single control (high/low) heat setting. Including adapter with 7/16'' x 28 UNEF therads, for use with propane and butane blended fuels, accidental tip-over safety shutoff, automatic low oxygen shutoff system, connects directly to disposalbe propane or butane blended fuel cylinders, runs up to 6 hours. Dimensions: approx. 20.2 x 35.5 x 37.6 cm.