Tru-Defense Door System


The new standard for dependable performance in door systems. Tru-Defense Door System maximizes the seal between the door and the frame to keep out the damaging effects of wind and rain, and increases energy efficiency.


The secret to our Tru-Defense Door System performance is a series of components designed and engineered to work together to perform better in all kinds of weather conditions.


Homeowners want safety, security and peace of mind. That’s why every Therma-Tru fiberglass entryway with a Tru-Defense Door System is backed by a full system warranty rider.

Tru-Defense Door systems:

Enhanced performance against air/water infiltration by maximizing the seal between the door and the frame.
Tru-Defense door systems are available to meet local building code needs.
Available with all our Fiberglass Entry Door Systems as well as our Hinged Fiberglass Patio Door Systems.

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