United Series 4500
The United Series 4500 vinyl sliding patio door offers an elegant, contemporary, sturdy, and energy saving design. It is suitable for replacement, new construction and built to stand for a lifetime at an affordable price.
- Fully welded frame and sash
- Flat and dimensional grids available
- Energy efficient with insulated
- Provide beauty and strength with triple wall exterior beveled frame
- Reinforced aluminum to improve sturdiness and wear resistance
- Minimal effort and smooth sliding