Max Heat Output - 475000 BTU, Max Temperature Output 180 Degrees F, 2-12 Inch Outlet Ducts, Air Flow 2650-5500 CFM, Internal Duct Storage, Isuzu Tier 4 Final Engine, Maximum Run Time-44 Hours on one tank of fuel, Operating Weight-6400 Lbs, Electric Brakes, DOT Compliant, Appearance Condition: VERY GOOD, Mechanical Condition: VERY GOOD