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Manufactured in the UK with Nationwide Support

Trusted - 10 Year Guarantee - Delivering Nationwide

Aluminium Window & Door Manufacturers Since 1985

UK Made • 10-Year Warranty • Nationwide Delivery • FastTrack Available

Modern Aluminium Window & Doors

High Security Locking • Slim Sightlines • Enhanced Thermal Performance

Colour Finishes

Stock finishes and full RAL availability.

DUR Colour Range

Standard Stock White

KL 9010 Matt

Black

KL9005 Matt

Black on White

KL9005 on KL9010 Matt

Brown

KL8014 Matt

RAL Example - Red

RAL 3011 Matt

There are three colour options available for our Royale Windows at reduced cost and reduced lead time when compared to other RAL colours. White being the cheapest and quickest option.

Our Aluminium Windows are available in any single or dual special RAL colour paint finish. There are over two hundred different RAL colours available.

Performance & Decorative Glass

Double and triple glazing options available with enhanced thermal, acoustic and solar performance.

Unglazed
Unglazed
Clear glass sample
Standard Clear Glass
Square Leads
Square Leaded Glass
Diamond leads
Diamond Leaded Glass
Horizontal Flat Astragal Bars
Horizontal Flat Astragal Bars
Butted Astragal Bars
Butted Astragal Bars
Flat Overlapped Astragal Bars
Flat Overlapped Astragal Bars
Textured / Obscure Glass
Textured / Obscure Glass
Self Cleaning Glass
Self Cleaning Glass

Handles, Hinges & Heritage Details

Authentic styling with modern security. Chelton Secure™ locking, slim heritage handles and hinge options to suit traditional steel replacement windows.

Chelton Secure™

Handle Chelton® Handle Range (see opposite)
Lock Chelton Secure™ Locking
Hinges Friction Hinges
Vent W20023 - Chelton Sash
WER ‘C’
Options Dummy Butt / Parliament Hinges

Our patented Chelton Secure™ locking handle gives your windows the strength of steel and the best security available. The Chelton® handle actuates a modern multi-point lock, securing the window on up to three sides with six plus locking points. When combined with sash jammers to secure the hinge edge, you get all-round window security.

Handle Options

Two distinct handle styles are available, both designed to complement heritage windows while delivering modern performance and everyday usability.

Chelton Modern Handle

Chelton Modern Handle

A contemporary, slim and discreet handle design that blends into the window neatly. Its clean look suits a more modern interior while retaining an authentic external appearance.

Chelton Art Deco Handle

Chelton® Art Deco Handle

Designed to look like traditional steel window handles, with a simple 1930s Art Deco style that works especially well on period properties and steel replacement projects.

Friction Hinges

Friction hinges are the standard hardware option for outward opening sashes, with variants available for fire escape, easy cleaning and restricted opening requirements.

Standard Friction Hinge

Standard

The industry standard hinge. It remains open by means of friction in the hinge, allowing the window to stay open in any chosen position without the need for an old-fashioned peg and stay.

Max opening angle: 50° - 80°
The exact angle depends on the size of the opening.
Egress Easy Clean Hinge

Egress Easy Clean

A fire escape hinge for windows over 350mm wide to help comply with Part B requirements. It can also slide across to allow cleaning of the outside glass.

Max opening angle: 90°
Restrictor Hinge

Restrictor

A safety hinge that provides a restricted opening, typically between 7° and 16° depending on sash size, allowing ventilation while helping protect against accidental falling.

Max opening angle: 37.5° - 50°
The exact angle depends on the size of the opening.

Butt & Parliament Hinges

Optional heritage-style hinge choices for projects where appearance is just as important as function, especially on traditional steel replacement designs.

Dummy Butt Hinges

Dummy Butt Hinges

An optional extra designed to give the appearance of working butt hinges without the cleaning and safety considerations. The rollers are concealed by the overlapping sash.

Working Butt Hinges

Working Butt Hinges

A more authentic-looking option when open and closed. In the closed position the hinges interlock and act as sash jammers. Typically used with a peg and stay, and not recommended for upper floors.

Designed For Security Without Compromise

Our Heritage Windows combine traditional styling with modern security features, helping to protect the home while preserving an authentic steel-look appearance.

Secure Heritage Windows With Modern Protection

Security is one of the main priorities when choosing new windows, which is why our Heritage Windows have been designed with protection built in as standard. From high strength hinges and key locking handles to sash jammers and modern multipoint locking, every detail is engineered to provide confidence and peace of mind.

Traditional aesthetics do not have to mean outdated performance. These windows offer authentic styling alongside practical features that help resist forced entry, improve internal glazing security and provide secure ventilation.

  • High strength friction stays or profile related butt hinges
  • Key locking handles as standard
  • Concealed handle fixings on Chelton handles
  • Sash jammers fitted as standard
  • Internally glazed sashes and dummy sashes
  • Secure night vent facility
  • High security multipoint locking options
  • Traditional look with modern protection
Heritage window security diagram
High strength hinges
01

High Strength Hinges

Windows are fitted with either high strength stainless steel friction stays or profile related butt hinges. Friction stays help secure the top and bottom of opening vents, while profile related butt hinges include interlocking elements that act like sash jammers to secure the hinge edge.

Key locking handles
02

Key Locking Handles

All handle options include a key locking facility as standard for added peace of mind. Even handles without an obvious key barrel feature concealed locking, using a grub screw within the back plate to prevent operation when locked.

Concealed handle fixings
03

Concealed Handle Fixings

On the Chelton handle range, the fixing screws are concealed beneath the glazing bead. The visible screws on Authentic handles are decorative only, meaning the handles cannot be removed to reach the locking mechanism without first de-glazing the window.

Sash jammers as standard
04

Sash Jammers As Standard

Heritage Windows are fitted with sash jammers, also known as vector excluders. These interlock when the window is closed to secure the hinge edge and provide added resistance against forced entry without affecting normal operation.

Internally glazed windows
05

Internally Glazed

All sashes and dummy sashes are internally glazed, also referred to as internally beaded. This improves security because the glass can only be removed from inside the building. It also offers practical installation advantages on multi-storey projects.

Secure night vent facility
06

Secure Night Vent Facility

Additional locking positions allow the window to remain slightly open while still locked. This creates ventilation for night use while helping to prevent unauthorised access through the opening.

High security multipoint locking
07

High Security Multipoint Locking

Modern multipoint locking is available alongside traditional furniture such as Art Deco and Monkey Tail handles. Espag locking, Chelton Secure™ and Ste’alth Secure™ options can secure the opening sash on three sides in multiple positions for enhanced protection.

Heritage Windows – Technical Specifications

Recommended sizes, performance data, application guidance and technical downloads for the Duration Heritage Stepped Window system.

Recommended Sizes

Top hung
Min. Width (mm)
350
Max. Width (mm)
1250
Min. Height (mm)
300
Max. Height (mm)
1250
Max. Weight (Kg)
50

Recommended Sizes

Side hung
Min. Width (mm)
350
Max. Width (mm)
850
Min. Height (mm)
350
Max. Height (mm)
1250
Max. Weight (Kg)
50

Window Performance

DOCL Complies Regulations
600 Pa Air Permeable
1050 Pa Water Tightness
2400 Pa Wind Resistance

Curved / arched options available. These statistics apply for suitable glass unit configurations. Please ask for more details. Download Test Certificates »

Specifying – Suitable Applications

  • Can be specified for light commercial and domestic applications.
  • Meets building regulations for new build. (For Oct 2010)
  • Meets building regulations for replacement and refurbishment projects. (For Oct 2010)
  • Suitable for use in listed buildings, heritage / conservation areas and period properties.

Key Profile Dimensions & Sightlines

Outerframe Depth (mm)
47
Sash Depth (mm)
52 / 56.5
Glazed Sealed Units (mm)
24 (4 × 16 × 4)
Projection Cill Height - Optional (mm)
25
Head Extension - Optional (mm)
32
Transom / Mullion - If Required (mm)
50

Please note: The details for the sight-lines are illustrated in our Section Identification. Please view this document and / or contact our technical department for more information.

Product Literature

Download specification sheets and full product brochures.

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