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​Therm​acore® Sectional Steel Doors

insulated sectional commercial door ​​

​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​Thermacore® is the premier line of insulated sectional doors available today. Thermacore® Series commercial sectional doors are an ideal choice for applications that demand the highest levels of thermal efficiency, air infiltration and wind load resistance.​​

​​Engineered for High Thermal Efficiency.
The Thermacore® product line’s unique manufacturing process provides a CFC-free, fully encapsulated, foamed-in place panel which maintains R-value performance year round – and year in and year out. Thermal breaks between internal and external skins, PVC thermal break and joint seal minimize air infiltration and provide one of the highest thermal efficiency ratings in the industry for specified applications.​ 

Thermacore® ​591, 592, 593, 594, 596, 599, AP 850, 515 and 525 meets IECC® requirements for maximum U-Factor of operable fenestrations (2015 Section C402.4) with a 3rd party certified tested value of less than 0.37.

  • Thermacore Sectional Steel Doors 591

    Model 591

    ​This heavy-duty, thermally efficient door fits a wide range of opening sizes and the spectrum of applications making it the most-specified insulated sectional door in the industry.
  • Sectional Steel Doors 592

    Model 592

    ​This heavy-duty door features one of the best overall air infiltration ratings in the industry and steel-polyurethane-steel panel construction to withstand the most demanding environmental requirements.
  • Sectional Steel Doors 593

    Model 593

    ​Featuring a ribbed, textured surface and polyurethane insulation, the 593 adheres to the strictest product tolerances and quality standards for medium-duty applications.
  • Sectional Steel Doors 594

    Model 594

    ​This medium-duty door features a raised-panel, wood-grain texture exterior surface and adheres to the strictest product tolerances and quality standards for long-lasting performance and good looks.
  • Sectional Steel Doors 596

    Model 596

    ​Ideal for extra heavy duty applications, this door features superior thermal efficiency, one of the best overall air infiltration ratings in the industry, and a Class 26 sound transmission rating.
  • Sectional Steel Doors 598

    Model 598

    A durable, light-duty door that provides a high level of thermal protection which makes it a solid choice for projects where economy and energy efficiency are equally important.​
  • Sectional Steel Doors 599

    Model 599

    ​A thermally efficient, flush panel door that features steel-polyurethane-steel panel construction and one of the best overall air infiltration ratings in the industry for heavy-duty applications.
  •  Sectional Steel Doors 850

    Model 850

    Engineered to deliver advanced performance in commercial and industrial applications, this door features the highest thermal performance values published by any major US manufacturer of 3" commercial insulated sectional doors.

Thermacore® ​​Wind Load Insulated Sectional Steel Doors

  • The Thermacore® sectional door model 515 and model 525 are engineered to withstand h​igher design pressure than our other Thermacore® models.
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Extra Heavy Duty Thermacore® ​​Insulated Sectional Steel Doors

  • The Thermacore® sectional door model 596 features one of the best overall air infiltration ratings in the industry – as well as a Class 26 sound transmission rating. Ideal for heavy-duty applications where both thermal efficiency and sound suppression are desirable. Features ozone-friendly polyurethane insulation.
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Heavy Duty Thermacore® ​​Insulated Sectional Steel Doors​​​​​​​​

  • The Thermacore® sectional door model 591 will meet or exceed almost any thermally efficient application requirement. ​​This heavy-duty door fits a wide range of opening sizes and the spectrum of applications — making it the best-selling door system in the Thermacore® line and one of the most-specified insulated sectional doors in the industry. Features ozone-friendly polyurethane insulation.
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  • Featuring one of the best overall air infiltration ratings in the industry, the Thermacore® sectional door model 592 is the most thermally efficient door system in its class. The Thermacore® product line features steel-polyurethane-steel panel construction which provides a thermal barrier that withstands extremely hot or cold climates and the most demanding environmental requirements. Features ozone-friendly polyurethane insulation.
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  • Featuring one of the best overall air infiltration ratings in the industry as well as flush panel design, the Thermacore® sectional door model 599 is the most thermally efficient door system in its class. The Thermacore® product line features steel-polyurethane-steel panel construction which provides a thermal barrier that withstands extremely hot or cold climates and the most demanding environmental requirements. Features ozone-friendly polyurethane insulation.​​
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Medium Duty Thermacore® ​​Insulated Sectional Steel Doors

  • The Thermacore® sectional door model 593 features a ribbed, textured surface and adheres to the strictest product tolerances and quality standards – for long-lasting performance and good looks. When your project requires a thermal door that is as energy efficient as it is attractive, this sectional door​ is up to the task. Features ozone-friendly polyurethane insulation.
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  • The Thermacore® sectional door model 594 features a raised-panel, wood-grain textured exterior surface and adheres to the strictest product tolerances and quality standards – for long-lasting performance and good looks. When your project requires a thermal door that is as energy efficient as it is attractive, this sectional door is up to the task. Features ozone-friendly polyurethane insulation.​​​
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Light Duty Thermacore® ​​Insulated Sectional Steel Doors

  • The Thermacore® sectional door model 598 is an exceptionally well-built door that provides a higher level of thermal protection than standard insulated doors. This sectional door adheres to strict product tolerances and quality standards; making it a solid choice for projects where economy and energy efficiency are equally important. Features ozone-friendly polyurethane insulation.​​​​​
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