- Fully welded units to form a single unitized structure
- Multi-chambered profiles add to the weld strength and improve thermal performance
- Pre-punched nailing fin for fast, efficient installation for new construction is standard on all models, but can be removed to add stucco flanges and brickmoulds
- Pocket cover available for renovation picture windows to hide the screws and give it a "flush" look.
- Standard 1/2" air sealed units for thermal performance.
- Sealed units feature super-spacer bar for a cleaner look and thermal performance
- Also available, Solarban 60® glass and argon gas for superior thermal performance
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