search button

 Thermacore® Model 599 


heavy insulated sectional steel door displayed in an environment with snow on the ground 

With an R-value of 17.5 (3.09 W/Msq) a U-value of .057 (.324 Msq/W), and one of the best overall air infiltration ratings in the industry, the Thermacore® Model 599 is one of the most thermally efficient door systems in its class. The 599 Model doors also carry a Class 26 sound transmission rating for applications where sound suppression is desirable.

The Thermacore® line features steel-polyurethane-steel panel construction which provides a thermal barrier that withstands extremely hot or cold climates and the most demanding environmental requirements.

Standard max width

40'2" (12,243 mm)

Standard max height

32'1" (9,779 mm)

Panel thickness

2" (51 mm)


17.5 (3.09 W/Msq)


0.057 (.324 Msq/W)

Sound Transmission Class 26 

Ideal for applications that require sound control

Air infiltration

at 15 mph (24 kmph) .08 cfm/ft2 (1.46 m3/hr/m2)
at 25 mph (40 kmph) .08 cfm/ft2 (1.46 m3/hr/m2)

Thermal break


Exterior steel

.015" (.38 mm) galv.

Exterior surface

Flush, textured

Standard springs

10,000 cycle

Wind load

Designs available for usage in high-wind conditions


10 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)

Exterior color for 599

color swatch white

Actual door color may vary slightly from the digital representation above. Color samples are available by request through your local Overhead Door Distributor.


Interior color

  • White

Additional options

  • Aluminum sash section up to 24'2" (7,366 mm) wide
  • Insulated glass, tempered glass, polycarbonate, multi-wall polycarbonate, etc.
  • Four-section pass door
  • Knock & Lock® Breakaway Door System
  • High-usage components
  • Wind load options
  • Electric operator

  • Chain hoist
  • Posi-TensionTM drums
  • Safety bottom fixture
  • Bottom-sensing edge
  • Flexible jamb, header seals
  • Exhaust ports