NEW System 4-45 Hi / Hi+ Thermally Enhanced Casement Window
Introducing the latest addition to the Metal Technology Hi+ range – the new System 4-45 Hi / Hi+, a high-performance casement window system designed to achieve the highest requirements in building performance.
Marking a significant milestone, this system represents the first aluminium Passive House certified casement window system in the UK, setting a new benchmark for thermal performance within the sector.
Developed with advanced polyamide thermal breaks and optimised profile design, the system delivers outstanding energy efficiency alongside proven structural, weather and security performance.
Key features:
- Achievable U-values as low as 0.71 W/m²K
- Passive House certified system
- PAS 24 tested for enhanced security performance
- Accommodates glazing units from 26mm to 65mm
- Wide range of profiles including vents, outer frames and structural mullions
- Internally glazed sash options available
- Suitable for single or dual colour finishes
- Thermally efficient design to minimise heat transfer
- Acoustically tested in accordance with BS EN ISO standards
The 4-45 Hi / Hi+ provides architects and specifiers with a future-ready window solution, combining design flexibility with industry-leading thermal performance.
Specify via NBS Source or contact your local Metal Technology representative to discuss your next project.
Brochures, CAD details, test certification and full technical documentation are available to support specification and design development.
