When your project requires a sectional door with an exceptional degree of thermal efficiency, the Thermacore® Sectional Steel Door Model 591 is a proven performer. The Thermacore® steel-polyurethane-steel panel construction provides a thermal barrier that withstands extreme climatic conditions and the most demanding environmental requirements.
This 1 5/8” (41 mm) thick, 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. Boasting an R-value of 14.86 (2.63 W/m2), a U-value of .067 (.380 m2/W), and one of the best air infiltration ratings, the Thermacore® 591 will meet or exceed almost any thermally efficient application requirement.
Actual door color may vary from the digital representation shown here.
Color samples are available by request.
35'2" (10,719 mm)
24'1" (7,341 mm)
1 5/8" (41 mm)
.015" (.38 mm) galv.
14.86 (2.63 W/m2)
.07 (.38 m2/W)
10 year limited delamination
1 year limited on door
See warranty documents for additional information