Each of our doors includes listed performance ratings for key energy efficiency and light transmission factors, including:
- U-Factor (measures heat loss)
- Solar Heat Gain Coefficient (SHGC) (measures how much solar radiation is admitted)
- Visible Transmittance (VT) (measures the amount of visible light that passes through the glass)
You can find the specific performance ratings for each individual door model on its product page.
If you have questions about how to choose the right performance ratings for your climate or project needs, our team is happy to assist you.
Apr 28, 2025