Aluminium Windows
Cortizo Cor 70 Hidden Sash
A revolution in casement design — the hidden sash creates an almost frameless appearance when closed, maximising light transmission and architectural purity.
Frame Depth
70mm
Thermal Transmittance
Uf 2.0 W/m²K
Max Sash Width
1,400mm
Max Sash Height
2,400mm
Product Introduction
Cortizo Cor 70 Hidden Sash
A revolution in casement design — the hidden sash creates an almost frameless appearance when closed, maximising light transmission and architectural purity.
Why specify Cortizo?
The Cortizo Cor 70 Hidden Sash represents the premium end of the aluminium windows market — a system designed for projects where performance, aesthetics and long-term reliability are non-negotiable. Every component is engineered to European standards and backed by full manufacturer warranty.
As authorised Cortizopartners, Swiftrooms supply and install this system to the manufacturer's exact specification — ensuring the performance credentials translate from the data sheet to the installed product.
Technical Specifications
Performance data.
Frame Depth
70mm
Thermal Transmittance
Uf 2.0 W/m²K
Max Sash Width
1,400mm
Max Sash Height
2,400mm
Air Permeability
Class 4
Water Tightness
Class 5A
Wind Resistance
Class C5
Specifications shown are manufacturer-published values. Contact our technical team for project-specific performance data or independent test reports.
Key Features
What sets it apart.
Concealed sash design
70mm thermal break
Tilt-only and tilt-turn operation
European hardware standards
Installed Projects
See it in completed projects.
Other Aluminium Windows
Technical Insights
Further reading.
Interested in Cortizo Cor 70 Hidden Sash?
Get a specification and quote
Our team will assess your project requirements and provide a detailed quotation for this system.