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Insulated Sectional Steel Doors

Wayne Dalton Advantages

Whether your commercial door application calls for first-rate thermal efficiency, has stringent wind load requirements, or requires a custom oversized door, we have the door for you. From our extremely efficient and durable Thermospan® line of doors to our economical steel sectional doors, every door is engineered and built to provide ultimate quality. With Wayne Dalton, you get more insulation choices, including the highest R-value rating available in a standard design and the widest range of design and performance options in any commercial sectional door offering.

The following chart can help you determine which Wayne Dalton Sectional Steel door is best for your specific application. Larger sizes may be available. For more information, contact our Customer Service (800) 764-1457. ​

  
CalculatedRValue
SteelGauge
SectionThickness
IntegratedStruts
MaxStandardWidth
ThermoMark™ 530&&&/insulated-sectional-steel-door-530&&&/TableImages/insulated-sectional-steel-door-model-530.jpg&&&insulated sectional steel door

26

27​

3"​

No​

40'2"​

Thermospan® 200-20&&&/insulated-sectional-steel-door-200-20&&&/TableImages/insulated-sectional-steel-door-model-200-20.jpg&&&insulated sectional steel door

17.5

​20​

​2"​

​Yes​

​24'2"​

Thermospan® 200&&&/insulated-sectional-steel-door-200&&&/TableImages/insulated-sectional-steel-door-model-200.jpg&&&insulated sectional steel door

17.5

​27

2"​

Yes​

40'2"​

ThermoMark™ 5150 & 5200&&&/insulated-sectional-steel-door-5150-5200&&&/TableImages/insulated-sectional-steel-door-model-5150-5200.jpg&&&insulated sectional steel door

​5150 = 12.12

5255 = 16.22

​27

27

​1-3/8"

1-7/8"

​No

​20'2"

26'2"

ThermoMark™ 5155 & 5255&&&/insulated-sectional-steel-door-5155-5255&&&/TableImages/insulated-sectional-steel-door-model-5155-5255.jpg&&&insulated sectional steel door

5155 = ​12.12

5255 = 16.22

​27

27


 

​1-3/8"

1-7/8"

​No

​20'2"

26'2"

Thermospan® 150&&&/insulated-sectional-steel-door-150&&&/TableImages/insulated-sectional-steel-door-model-150.jpg&&&insulated sectional steel door

14.16

​27

​1-1/2"

​Yes

​26'2"

Thermospan® 125&&&/insulated-sectional-steel-door-125&&&/TableImages/insulated-sectional-steel-door-model-125.jpg&&&insulated sectional steel door

10.79

​27

​7/8"

​Yes

​18'4"

*Wayne Dalton uses a calculated door section R-value for insulated doors.