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.
Strong, Lightweight, Attractive and Durable.
Thermacore® 591 sectional steel doors feature roll-formed, hot-dipped galvanized steel exterior panels designed for exceptional strength and sound suppression capabilities. Wind load design available for usage in high-wind conditions. Two coats of baked-on, polyester paint on a ribbed, textured exterior surface provide a handsome finish that will last for years. Our industry-leading 10-year limited warranty against delamination means that we’ll stand behind the quality of our doors at the outset and for the long haul.
Superior Field Serviceability.
Thermacore® has a special internal construction which allows hinges to be placed anywhere along the panel’s length permitting customization on the job site — for fast and precise installation, repair or retrofit.
Built With the Best Technology in the Business.
This sectional steel door is manufactured using Overhead Door Corporation’s proprietary, computer-controlled fabrication process. This advanced technology ensures adherence to the industry’s strictest product tolerances and results in an exceptionally well-built door for outstanding thermal efficiency and longlasting performance.
Many Options, Better Solutions.
The Thermacore® sectional steel door model 591 fits openings up to 35'2" (10.7 m) wide and 24'1" (7.3 m) high. A full line of electric operators ensures precise and trouble-free motor operation in a variety of mounting options (side, center or trolley). Available options include aluminum sash section, thermal glazing, pedestrian pass door, impact panel, and jamb weatherstripping. Optional high-usage components expand the versatility of the 591 to high-cycle conditions, with torsion springs in 25k, 50k, 75k or 100k cycles, a solid-steel shaft to reduce fatigue and deflection, and a heavy-duty 3" (76 mm) steel track for added durability.
BIM objects are for general reference and should not be used for exact construction information. Please contact an Overhead Door Distributor when exact dimensions are required.
Region availability
North America |
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Anguilla |
Antigua and Barbuda |
Aruba |
Barbados |
Belize |
Bermuda |
British Virgin Islands |
Canada |
Caribbean Netherlands |
Cayman Islands |
Collectivity of Saint Martin |
Costa Rica |
Cuba |
Curaçao |
Dominica |
Dominican Republic |
El Salvador |
Greenland |
Grenada |
Guadeloupe |
Guatemala |
Haiti |
Honduras |
Jamaica |
Martinique |
Mexico |
Montserrat |
Nicaragua |
Panama |
Puerto Rico |
Saint Kitts and Nevis |
Saint Lucia |
Saint Pierre and Miquelon |
Saint Vincent and the Grenadines |
Saint-Barthélemy |
Sint Maarten |
The Bahamas |
Trinidad and Tobago |
Turks and Caicos Islands |
U.S. Virgin Islands |
United States |