SunStar SIU Series Standard/Tough Guy Infrared Straight U Tube Single Stage Heater - 75,000 BTU Tube Type:Aluminized Steel Radiant Tubes (Tough Guy) 2- The air control mechanism

2- The air control mechanism is not open enough

our glass is designed to handle high temperatures and is backed by a 3-year warranty

Floor Register Temperature ControlWilliams floor furnaces are equipped with an automatic floor register grille temperature control

Improved functionality with Version 2

SunStar SIU Series Standard/Tough Guy Infrared Straight U Tube Single Stage Heater - 75,000 BTU Tube Type:Aluminized Steel Radiant Tubes (Tough Guy) 2- The air control mechanismWhether you need to heat your warehouse, garage, or other hard to heat spaces, the SunStar SIU Series infrared heaters provide both the fuel efficiency of radiant heat and the installation flexibility you need. The SIU Series are perfect heaters for hard to heat spaces like your warehouse or garage, the SunStar 75,000 BTU SIU Series Infrared Tube Heater with a 20' 30' long tube provides both the fuel efficiency of radiant heat and the installation