1. Beveled exterior mainframe for added beauty and clean appearance.
2. Multi-chambered sash and mainframe create insulating air spaces for superior thermal efficiency.
3. Mainframe jamb depth dimension of 2-3/4" allows for replacement installations.
4. Insulated glass unit with optimal air space improves year-round performance.
5. PPG Intercept™ Warm Edge Spacer System maximizes performance and longevity.
6. Interlock at sash locking rail adds to your sense of security, comfort, and well-being.
7. Metal reinforcement for added strength at locking rail.
8. Fully extruded lift rail provides strength and stability for easy operations.
9. Full-capture sill enhances protection from water and air infiltration.
10. Vinyl frames and sashes will never chip, peel, crack or warp. Made tough and solid with virgin vinyl (PVC) resin, their color is formulated throughout so the beautiful luster lasts.