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insulated steel

Insulated Sectional Steel Doors

Durable and thermally efficient.

If your business needs a door that's thermally efficient or wind loaded to protect it against the elements, insulated sectional steel doors are ideal. Available in custom sizes, NationServe offers one of the industry’s most complete selection of panel profiles, gauges, track styles, and hardware for commercial or industrial sectional door systems. Wayne Dalton’s line of Thermospan® and ThermoMark™ doors provide efficiency and durability for all commercial applications.

INSULATED SECTIONAL STEEL THERMOSPAN 200-20

INSULATED SECTIONAL STEEL THERMOSPAN 200-20

HIGHLIGHTS Max Width: 40’ 2” Max Height: 32’ 1” R-value: 17.50 Material: 20-gauge Steel   FEATURES 2” section ...
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INSULATED SECTIONAL STEEL THERMOSPAN 200

INSULATED SECTIONAL STEEL THERMOSPAN 200

HIGHLIGHTS Max Width: 40’ 2” Max Height: 32’ 1” R-value: 17.50 Material: Steel   FEATURES 2” section thickness ...
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INSULATED SECTIONAL STEEL THERMOSPAN 150

INSULATED SECTIONAL STEEL THERMOSPAN 150

HIGHLIGHTS Max Width: 26’ 2” Max Height: 20’ 1” R-value: 14.16 Material: Steel   FEATURES 1-1/2” section thickness** ...
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INSULATED SECTIONAL STEEL THERMOSPAN 125

INSULATED SECTIONAL STEEL THERMOSPAN 125

HIGHLIGHTS Max Width: 18’ 4” Max Height: 16’ 1” R-value: 10.79 Material: Steel   FEATURES 7/8” section thickness ...
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INSULATED SECTIONAL STEEL THERMOMARK MODEL 530

INSULATED SECTIONAL STEEL THERMOMARK MODEL 530

HIGHLIGHTS Max Width: 40’ 2” Max Height: 24’ R-value: 26 Material: Steel   FEATURES 3” section thickness Continuous ...
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INSULATED SECTIONAL STEEL THERMOMARK MODELS 5150 & 5200

INSULATED SECTIONAL STEEL THERMOMARK MODELS 5150 & 5200

HIGHLIGHTS Max Width: 20’ 2” (5150), 26’ 2” (5200) Max Height: 20’ 1” R-value: 12.12 (5150) and 16.22 ...
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COMMERCIAL OPERATORS

From hoist to trolley, counter to jackshaft, our lineup of Genie commercial operators can safely, efficiently, and quietly handle your commercial door’s many cycles.

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