The Alu Steel is a high-performance aluminum window system engineered by Cortizo to meet the most demanding residential standards. Achieving Class 4 air permeability, Class E1200 water tightness, and Class C5 wind resistance — the highest classifications under European testing norms — this system delivers uncompromising protection against the elements without sacrificing architectural refinement. With sash weights supported up to 352.74 lb (160 kg) and maximum dimensions reaching 59″ × 102″ per sash, the Alu Steel is purpose-built for large-scale, high-exposure residential applications where performance cannot be left to chance.
Performance Ratings
- ● Air Permeability: Class 4 — UNE-EN 12207
- ● Water Tightness: Class E1200 — UNE-EN 12208
- ● Wind Resistance: Class C5 — UNE-EN 12210
- ● Max. Sash Weight: 352.74 lb (160 kg) — subject to window typology
Opening Options
- ● Tilt & Turn — Ventilation + full open functionality
- ● Turn Only (Side Hung) — Classic casement-style opening
- ● Tilt Only (Hopper) — Controlled top-inward ventilation
- ● Fixed (Inoperable) — Maximum thermal & structural performance
Maximum Dimensions Per Sash
| Dimension | Imperial | Metric |
|---|---|---|
| Maximum Width | 59″ | 1,500 mm |
| Maximum Height | 102″ | 2,600 mm |
| Maximum Sash Weight | 352.74 lb | 160 kg |
CORTIZO — Authorized Cortizo dealer — European-engineered aluminum systems.
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