Residential Glass - What's inside a Mastic Window...

1. Insulated glass is standard, with low-Elargon and other energy-saving options available.

2. Sleek sash design provides large glass area, with more daylight opening than other windows.

3. Two benefits in one: sealed sash and frame corners keep out wind and weather, add structural strength.

4. Mastic windows are made of lifetime-warranted vinyl, backed by Alcoa, formulated to resist sun and UV ray damage. Vinyl never needs painting - the color is throughout.

5. The integral lift rail provides easy window operation.

6. Structural areas are double-walled for strength and resistance to heat buildup.

7. Sashes feature double weather-stripping for air tightness and energy savings.

8. Double tilt-in sashes make cleaning safe and easy.

9. Heavy-duty locks and operator hardware add security and weather-tightness.