The W4900 aluminum casement window system has been certified by the Passive House Institute (PHI) to meet the stringent requirements of passive houses. It combines all the renowned advantages of aluminum windows, such as stability and high structural requirements, with a high thermal insulation value of Uw ≤ 0.78 W/m²K and maximum architectural design freedom.

Features & Benefits

• Significant energy savings thanks to exceptional thermal performance compliant with the passive house certification standard.
• Multi-chamber central seal ensures optimal waterproofing, preventing energy loss.
• Increased natural light thanks to the minimalist design
• Ease of use and high functionality
• High level of security thanks to multiple perimeter locking
• Modern design
• Simplified accessibility in compliance with regulations for people with special needs and children
• Wide range of types and solutions
• Greater static resistance and functionality even in extreme weather conditions
• Window type: Casement
• Thermal insulation: Yes
• External shape: Flat

Technical characteristics

• Frame depth: 89.5 mm
• Sash depth: 97 mm
• Minimum surface height: 102 mm
• Sash weight: up to 180 kg
• Glazing type: Triple
• Maximum glazing thickness: 48-80 mm
• Mechanism: Euro-groove, Euro-nut
• Sealing method: 3-level perimeter with EPDM gaskets
• Minimum threshold height: 20 mm
• Thermal insulation type: 54 polyamide mm, Kooltherm Q3, insulating foam

Performance
• Uf = 0.76 W/m²K
• Watertightness (EN 12208): Class 6A
• Air permeability (EN 12207): Class 3
• Wind load resistance (EN 12210): Class C4
• Burglar resistance: RC1/RC2/RC3
• Thermal transmittance Uw = 0.9 W/m²K

Types
1. Single-sash casement window
2. Double-sash casement window
3. Single-sash casement French door with low threshold
4. Double-sash casement French door with low threshold
5. Single-sash casement/tilt and turn window with fixed transom
6. Double-sash casement/tilt and turn window with fixed transom
7. Double-sash casement/tilt and turn window with opening transom

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