Thermospan^® Model 200-20 is the ideal commercial sectional door for energy-conscious architects, engineers, contractors, and building owners. With a U-value* of .057 and R-value* of 17.5, this door outperforms most conventional insulated steel doors.

The Wayne Dalton Thermospan^® Series doors are the only sectional doors in the industry with patented, roll-formed integral struts on each section, making them the most rigid doors available. The Thermospan^® Series also has a patented manufacturing process with a polyurethane core that is continuously foamed-in-place between the outer and inner skins. An innovative thermal break keeps the interior skin at room temperature, preventing condensation and frost and helping to resist corrosion.