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Thermacore® Sectional Steel Doors 598

sectional doors used on building

​​​​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.​​​


Standard max width
16'2" (4,928 mm)

Standard max height
14'1" (4,293 mm)

Panel thickness
1" (25.4 mm)


9.31 (1.64 W/m2)

Thermal break
Hot melt

*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.

Exterior Steel
.012" (.3 mm) galv.

Exterior Surface
Ribbed, textured

Standard Springs
10,000 cycles

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) ​

Door Options
​​Door Options
  • 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​

Exterior Color

  • white color swatch White

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

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