Insulated Sectional Steel Doors for Efficiency and Strength

insulated sectional steel doors model 125

Key Product Features:

  • Polyurethane insulation, R-Value=10.79
  • Max Width 18’4”
  • 7/8” Section Thickness
  • Patented, roll-formed integral struts for rigidity
  • Stucco embossed exterior with pinstriping available in white

Ideal for applications where thermal efficiency is important, and competitive cost is essential, Wayne Dalton’s Thermospan® 125 sectional door features a foamed-in-place polyurethane core firmly bonded to hot-dipped galvanized inner and outer skins. Patented integral roll-formed struts per section add rigidity and strength, making the Thermospan® 125 suitable for commercial and industrial applications.

Color Options:

Pre-painted exterior is factory-finished with baked-on corrosion-resistant primer and a white polyester finish coat.

color white


Custom Colors Also Available

Garage Door Painting

This commercial door model is available with the TruChoice™ Color System, Wayne Dalton’s custom painting process that offers more than 6,000+ colors.

Window Options:

insulated sectional steel door model 125 with one small window
Vision lites allow for visibility while maintaining security

Materials & Construction

door construction insulated sectional steel door model 125

Wayne Dalton’s Thermospan® 125 doors feature continuous foamed-in-place polyurethane insulation and standard joint seal that provide an R-value of 10.79. The construction provides a substantially higher thermal efficiency than industry standard polystyrene doors.

Thermospan® 125 doors feature pre-painted inner and outer skins made from hot-dipped galvanized steel for added corrosion protection. The exterior surface is pebbled and grooved, enhancing the appearance while providing improved strength. The Wayne Dalton Thermospan® Series doors are the only doors in the industry with two patented, 1 3/4"roll-formed integral struts on each section, making them the most rigid doors available.

Hot-dipped 18-gauge galvanized end caps offer a superior surface for hinge attachment. Our standard joint seal prevents air infiltration and in conjunction with the solid polyurethane core, offers enhanced energy efficiency.

*Wayne Dalton uses a calculated door section R-Value for insulated doors.