Environmentally Friendly, Green Entry Doors
Width of the overall glass unit is 1 3/8" top rating in energy efficiency.
Whether you are designing a green home or attempting to make your home more energy efficient, the door system that you decide upon can have a great impact. Ostaco Windows and Doors have partnered with Therma Tru Doors to create a door system that will contribute to improving your energy efficiency and green efforts.
Green Efforts:
- All of Ostaco's doors are fiberglass which significantly reduces our requirement for wood and in turn reduces Ostaco's overall carbon footprint.
- All of Ostaco's door slabs have a CFC-free solid polyurethane foam core!
- What does this mean? Well, CFC stands for chlorofluorocarbon (CFC) which is an organic compound that contains carbon, chlorine, and fluorine, produced as a volatile derivative of methane and ethane.
- CFC is known for its contribution to ozone depletion and as such Ostaco has made sure that our doors are CFC-free!
- Most important is the fact that Ostaco's door systems are built to last! Invest in a quality product that will stand the test of time and rest assured in the fact you will not have to replace your door system for a very long time, if at all, reducing your waste significantly.

Energy Efficiency:
- Ostaco Windows and Doors has partnered with Therma Tru to offer the Tru Defense ® Door System
- What exactly is the Tru Defense ® Door System?
- It is the new standard for dependable performance in a door system.
- The Tru-Defense Door System maximizes the seal between the door and the frame to keep out the damaging effects of wind and rain, and increase 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.
- Most of our doors are energy star rated.








