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Keeps interiors warm in winter, cool in summer. Slats filled with 7/8" thick pressure-foamed-in-place urethane insulation make a curtain with U factor of 0.158, R value of 6.33, calculated according to ASHRAE formula. Closed cell urethane foam insulation provides the lowest thermal conductivity of any insulation commercially available.

Thermiser doors pay for themselves in 42 to 48 months, depending on climatic zone.

Weather seals can be specified individually at hoods, guides, and bottom bars. The energy saving WEATHERGARD construction provides cost-effective weather resistance with full weather sealing in combination with flat slat curtain.

Rolling Service Doors

Glazed Rolling Grilles

Glazed curtain provides security against theft of small articles; creates barrier against refuse, odors and smoke. Curtain formed of clear, flame retardant polycarbonate panel modules. Smoke and fire test data available on request.

Cornell offers many solutions in its line of UL or FM labeled rolling door products, closures that protect openings in walls where rated doors are required by building codes or insurance requirements. These doors must close automatically in the event of a fire. They also may be operated manually or electrically as needed for access or security.Wayne Dalton

Rolling Fire Doors

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Steel Sectional Overhead Doors: Strong, Impact Resistant, Made for Moderate-to Heavy Duty Applications. Wayne Dalton steel doors are offered in a variety of gauges and styles to fit particular applications: 24-, 20- and 16- gauge...deep ribbed or flush. Box shaped and intermediate and end stiles are formed of 20- or 16-gauge steel to interlock and fit the section's contour for greater strength. Different insulation packages are available and all steel door sections feature deep ship lap joints for superior weatherseal.

Steel Sectional Doors

Thermospan 200

Thermospan 200 and the 20 gauge 200-20 insulated doors demonstrate that sectional overhead doors no longer need to be the weak link in the energy efficient building. Independently tested, it provides one of the best installed door "U" - value available.

Thermospan 150 gives you competitively priced, thermally efficient doors with remarkable insulation values surpassed only by our Thermospan 200 Models. When you combine this outstanding energy efficiency with an attractive  non-repeating random stucco finish, high-strength steel and quiet, smooth operation you will be glad you chose Thermospan 150.

Thermospan 150