ThermaSeal® Series

For maximum thermal protection, choose DockStar’s ThermaSeal, durable, energy-efficient thermal sectional doors for your commercial, industrial, agricultural, or loading dock applications. Our exclusive process fills 100% of the door’s interior space with proprietary energy-saving polyurethane NeuFoam™ insulation, to deliver exceptional thermal efficiency. This process also provides a superior foam density for excellent structural integrity. All ThermaSeal thermal sectional commercial doors are available with an IECC-compliant option.
thermal door seal

ThermaSeal® TM320

With the benefits of the TM300, plus a heavy-duty 20-gauge exterior, the ThermaSeal TM320 is perfect for meeting job-specific requirements without sacrificing the features you expect from a DockStar sectional door.
sealed garage doors

ThermaSeal® TM300

For maximum thermal protection, choose ThermaSeal. A durable, energy-efficient sectional garage door. Our exclusive process fills 100% of the door’s interior space with our proprietary energy-saving polyurethane NeuFoam™ insulation, to deliver an exceptional thermal efficiency.
thermaseal door

ThermaSeal® TM220

ThermaSeal TM220 is the choice for durability and thermal efficiency in challenging environments. This 2″ thick door has all the features and options you need for a wide range of applications with a heavy-duty, 20-gauge exterior and 0.21 U-Factor (R-Value 18.3).
gray garage doors

ThermaSeal® TM200C

The TM200C commercial sectional insulated steel door provides the same great quality and durability you get from all ThermaSeal models, with the added benefit of seven colors to choose from. This 2” thick door is a great option for energy efficiency with a U-Factor of 0.17 (R-Value 18.3).
sealed garage door

ThermaSeal® TM200

With a U-Factor of 0.21 (R-Value 18.3), this 2″ thick door is a great option for energy efficiency in the ThermaSeal line. With all the standard features you expect from a ThermaSeal door, the TM200 is a great fit for a variety of applications demanding performance.
commercial door

ThermaSeal® TM175

With a U-Factor of 0.21 (R-Value 16.4), this benchmark door provides proven Raynor reliability and durability to meet or exceed the requirements of daily use. The TM175 door is offered with the widest selection of quality features and options for the most common product applications.

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American Made

We are proud to manufacture our products in North America, focusing on continuous improvement of our processes from start to finish.
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Quality Crafted

Our commitment to the quality of our products extends beyond the sale, with competitive warranties and industry-leading customer service.
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Service & Installation

Expert installation and dedicated service for all doors, all backed by competitive warranties and industry-leading customer service.
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