Thermacore® Sectional Steel Door – 598
Model 598
The Thermacore® Sectional Door Model 598 is a an exceptionally well-built door that provides a higher level of thermal protection than standard insulated doors. This premium insulated sectional door represents an economical choice for lighter-duty applications.
Categories: Sectional Doors, Thermacore® Sectional Steel Doors
Overview
Construction
| Product Specifications | |
|---|---|
| Standard Max Width | 16’2″ (4,928 mm) |
| Standard Max Height | 14’1″ (4,293 mm) |
| Panel thickness | 1″ (25.4 mm) |
| U-factor* | .20 |
| R-value** | 9.31 (1.64 W/m2) |
| Air infiltration | at 25 mph (40 kmp/h) .46 cfm/ft2 (8.40 m3/hr/m2) |
| Thermal break | Hot melt |
| Exterior Steel | .012″ (.3 mm) galv. |
| Exterior Surface | Ribbed, textured |
| Standard Springs | 10,000 cycles |
*U-factor values are independently tested and verified per ANSI/DASMA 105.
**Overhead Door uses a calculated door section R-value for our insulated doors.
Warranty
- 8 year limited delamination
- 1 year limited on door
- 3 year/20,000 cycle limited on door & operator system (when purchased together; on material and workmanship)
Options

Ribbed Panel
Actual door color may vary from the digital representation shown here. Color samples are available by request through your Overhead Door™ Distributor.
Exterior Colors

White
- Chain Hoist or Electric Operator is recommended for doors above 10’ tall or more than 400 pounds
- Thermal glazing
- High-usage components
- Wind load options
- Electric operator
- Chain hoist
- Posi-Tension™ drums
- Safety bottom fixture
- Flexible jamb, header seal
- Photo eyes
- Window Glazing Options
Documents
Thermacore® Sectional Steel Door
Related products
Aluminum Glass Door – 511
Model 511
Aluminum Glass Door model 511 is designed in sizes up to 16'2" (4928 mm) wide and 16'1" high (4902 mm). Featuring a narrow center stile width of 21/32" (17 mm), these doors are sleek, attractive and permit maximum visibility. An array of glazing choices, top and bottom rail widths, finishes and special options customizes the 511 to satisfy nearly any project requirement.
Aluminum Glass Door – 521s
Model 521s
EverServe® Aluminum Glass Door model 521S is a sectional aluminum door appropriate for environments where maximum light infiltration and/or visual access is required. Designed to fit openings up to 20'2" (6147 mm) wide and 18'1" (5512 mm) high, the Model 521 features a wide, 2-11/16" (68 mm) center stile, 3-3/4" (95 mm) or 4-1/2" (114 mm) bottom rail, based on door size.
Aluminum Glass Door – 522
Model 522
Aluminum Glass Door model 522 is designed in sizes up to 18’ 2” (5486 mm) wide and 14’ 1” (4318 mm) high. This aluminum full-view door, featuring a frameless design, is ideal for restaurants, auto dealerships and any application where the door needs to integrate seamlessly with the aesthetics of the building. Available with five glass options.
Sectional Steel Door Model 422
Model 422
Sectional Steel Door model 422 door is ideal for heavy-duty applications requiring protection against the elements. These doors feature a 2" (51 mm) panel thickness, 16-gauge steel intermediate and end stiles, ribbed steel exterior and 26-gauge steel back cover in a white finish. Polystyrene insulation provides an R-value of 7.35. The Model 422 is a 20-gauge steel door available in sizes up to 29´2" in width and 24´1" in height (8890 mm and 7341 mm). A multitude of options -- including reinforcing struts, movable center posts, and motor operation allow these insulated heavy-duty doors to be used in a variety of commercial and industrial environments.
Sectional Warehouse Doors
Model 404
Our Sectional Warehouse Doors provide a highly efficient design for strength and longevity for use in demanding commercial settings. They feature full 2” thickness for ultimate strength and durability. Optional insulation consists of 1 5/16” expanded polystyrene throughout the door. Both steel and polylaminate backer choices are available to ensure these models are well-suited for a wide range of applications.
Thermacore® Advanced Performance Door – 850
Model 850
Thermacore® AP Door Model 850 is engineered to deliver advanced performance in commercial and industrial applications where climate control, durability and ease of maintenance are primary concerns. This sectional steel door system presents the most advanced thermal performance values published by any major US manufacturer of 3" commercial insulated sectional doors.
The Thermacore® AP door system’s advanced performance answers the demand for more thermal efficiency, reliability, durability and design flexibility. The 850 door is the ideal choice for thermal protection against heat or cold in heavy duty applications, including: agricultural buildings, food and beverage storage facilities, pharmaceutical facilities, climate controlled facilities, industrial manufacturing facilities, government facilities, and shipping and receiving docks.
Thermacore® Sectional Steel Door – 591
Model 591
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 a U-factor of .13 (R-value-14.86) and one of the best air infiltration ratings, the Thermacore® 591 will meet or exceed almost any thermally efficient application requirement.
Thermacore® Sectional Steel Doors – 593
Model 593
The Thermacore® Sectional Door Model 593 is one of the best-selling doors in the Thermacore® line, and offers superior thermal efficiency to fit a broad range of applications. The Model 593 exterior skin is constructed of galvanized steel with a ribbed, textured finish. It is available with a white interior finish and a choice of white, industrial brown, tan or gray exterior. The Thermacore® Model 593 offers excellent thermal efficiency for medium-duty applications.
