Thermacore® Sectional Steel Doors
The Thermacore® Series represents the pinnacle of insulated sectional door technology. Designed for commercial and industrial applications that demand superior energy efficiency, air-tight performance, and wind load resistance, these doors deliver unmatched reliability and long-term value.
Engineered for Maximum Thermal Performance.
Each Thermacore® door is constructed through a CFC-free, foamed-in-place process, creating a fully encapsulated panel that preserves R-value consistency year after year. A combination of thermal breaks, PVC joint seals, and internal-external skin separation helps minimize air infiltration, offering one of the highest energy efficiency ratings available in its class.
Thermacore® models 591, 592, 593, 594, 596, 599, AP 850, 515, and 525 all meet IECC® 2015 Section C402.4 standards for maximum U-Factor of operable fenestrations, with third-party certified results below 0.37.
Thermacore® Sectional Steel Doors
Model 591
Thermacore® Sectional Steel Doors
Model 592
Thermacore® Sectional Steel Doors
Model 593
Thermacore® Sectional Steel Doors
Model 594
Thermacore® Sectional Steel Doors
Model 596
Thermacore® Sectional Steel Doors
Model 598
Thermacore® Sectional Steel Doors
Model 599
Advanced Performance Sectional Steel Door
Model 850
Thermacore® Wind Load Insulated Sectional Steel Doors
The model 515 and model 525 are engineered for environments requiring enhanced design pressure tolerance.
Extra Heavy Duty Thermacore® Insulated Sectional Steel Doors
The model 596 delivers one of the lowest air infiltration rates in the industry, paired with a Class 26 sound transmission rating. Built for heavy-duty applications, this model offers outstanding thermal protection and noise reduction, utilizing ozone-friendly polyurethane insulation.
Heavy Duty Thermacore® Insulated Sectional Steel Doors
The model 591 is the best-selling and most widely specified door in the Thermacore® lineup, offering exceptional thermal efficiency, durability, and fit versatility for a broad range of openings and commercial uses.
The model 592 features one of the best air infiltration ratings available, providing exceptional energy savings and dependable performance in extreme climates.
The model 599, with its flush panel design, offers superior thermal insulation in a sleek, modern profile.
All heavy-duty Thermacore® doors are built with steel–polyurethane–steel panel construction for maximum insulation and strength, using ozone-friendly polyurethane.
Medium Duty Thermacore® Insulated Sectional Steel Doors
The model 593 features a ribbed, textured finish, meeting exacting quality standards for long-lasting performance and appealing design.
The model 594 showcases a raised-panel, wood-grain exterior, combining attractive styling with advanced energy efficiency.
Both doors include ozone-safe polyurethane insulation and are ideal for projects requiring balanced strength, appearance, and thermal protection.
Light Duty Thermacore® Insulated Sectional Steel Doors
The model 598 provides dependable insulation and durability in a cost-effective design. Offering a higher level of thermal protection than typical insulated doors, it’s a smart choice for facilities prioritizing both value and energy efficiency. Built to precise standards, it ensures consistent performance with environmentally responsible polyurethane insulation.
