Cor 70 Hidden Sash

Our Cor 70 Hidden Sash C16 ST TB is a revolutionary aluminium window system that embodies an avant-garde aesthetic with its minimal visual profile. The hidden sash design maximizes natural light entry while maintaining a sleek look that complements any architectural style.

Design & Dimensions: Frame/Sash sightlines at 70/78 mm, and profile thickness at 1.6 mm. The windows can span up to a maximum width of 1300 mm and a height of 2400 mm, supporting a weight of up to 150 kg.
Opening Variants: Choose from inward, side-hung, tilt & turn, and bottom-hung to suit your space and preferences.
Material & Insulation: Constructed with Alloy 6063 T-5 and insulated with polyamide strips, EPDM triple gasket, and perimeter polyolefin foam for superior energy efficiency.

Performance is certified by the CSTB laboratory, with a Uw rating of ≥ 1.1 W/m^2K, acoustic Rw of ≤ 45 dB, and boasting EN 12207 Class 4, EN 12208 Class E1200, and EN 12210 Class C5 performance standards.

Modern, minimalist aesthetics with concealed sashes, creating a seamless and elegant window appearance.
Ultra-slim sightlines maximise glass area, offering more natural light and uninterrupted views, perfect for contemporary spaces.
Strong and durable 70mm frame depth ensures structural integrity while maintaining a sleek profile for both residential and commercial applications.
Choose from optional concealed hardware, hinges, drainage, and Arch Invisible handle for a fully streamlined and modern look.
U-values as low as 1.0 W/m²K, ensuring excellent thermal insulation, energy savings, and a comfortable interior environment.
Superior acoustic insulation, reducing noise pollution and making it an ideal choice for urban environments.
Compatible with double and triple-glazed units for enhanced thermal and acoustic performance.
Available in a wide range of powder-coated RAL colours, anodised finishes, and dual-colour options to complement any architectural style.
The perfect choice for new builds, extensions, or renovations, offering a sleek, minimalist design without compromising on performance.

Homeowners

Enhance the value and style of your home with our windows that provide excellent insulation and security.

Developers

Benefit from bulk delivery and volume discounts with tailored pricing for large projects.

Architects

We offer creative design support, flexible specifications, and the engineering expertise to bring your vision to life.

Designers

With a variety of aesthetic choices, including over 200 RAL colors, you can find the perfect accent windows for your projects.

FAQs

How long will the windows last?

Our windows have a lifespan of over 30 years, featuring corrosion-resistant technology.

How quickly can I receive my windows?

Delivery times vary, with a fast-track option available for urgent requests.

Is there any manufacturer warranty?

We offer a 10-year manufacturer’s warranty for peace of mind.

How much upkeep is needed?

Our windows require minimal maintenance, with straightforward cleaning instructions.

How can I get a quote?

Receive a customized quote online or by calling us at 01273 055021.