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Suitable for residential and commercial applications.


Thermally broken aluminium, vertical sliding windows, incorporating innovative polyamide thermal break technology, which creates a barrier between the cold air outside and warm air inside. This technology significantly reduces thermal transmittance and enhances the overall U-value of the product.

VS600 incorporates the traditional styling of sash windows with the advantages of a modern thermal aluminium profile. A traditional sash window may be used in heritage and conservation areas where Georgian and Victorian architecture is predominant. The ease of operation and excellent natural ventilation rates means that VS600 is also suited to high occupancy buildings.

The window offers a flush opening with no projection into or out of the building, it is a style of window which is frequently used in schools and hospitals. The hardware utilizes various standard hardware designs. As well as the vertical sliding sash, VS600 features a ‘tilt in’ operation that facilitates the cleaning of the external glass. The system features a low line glazing gasket that accepts 28 mm sealed units.

The system can achieve overall U-values of 1.6 W/m²K and a Window Energy Rating (WER) C rating. VS600 windows also feature concealed drainage and a concealed coupling option. Assembly of VS600 is optimized through a square cut outer frame and sash joints which require minimal machining aiding fabrication.

Features and benefits:

  • 1.6 W/m²K U-value.
  • An enhanced system designed to comply with the revisions to the Building Regulations (E&W), Document L compliant.
  • System can achieve Window Energy C Rating.
  • Decorative sash horns available.
  • BS 6375-1: 2009 Resistance to Weather compliant.
  • Extended chambered polyamide thermal breaks provide excellent thermal performance.


Suitable for residential and commercial applications.

General information


Uniclass 2015
Pr_30_59_98_02 Aluminium window unitsPrimary

L10/25 Aluminium windows

L10/330 Aluminium windows

Specification data - Aluminium window units
Product Reference



Consult manufacturer

Dimensions and configurations

As drawing

Insert reference.

As schedule

Insert reference.

Product performance -
Fire performance -
Fire resistance

Manufacturer's standard

Weather performance -
UK exposure category

Manufacturer's standard

Air permeability

Class 5A, 200 Pa


Class 7A, 300 Pa

Resistance to wind load

Class A4, 1600 Pa

Durability -
Operation and strength characteristics

Manufacturer's standard

Load bearing capacity of safety devices

Manufacturer's standard

Safety -
Anti-ligature standard

Consult manufacturer

Environmental -
Frame to glazing ratio (maximum)

Manufacturer's standard

Background ventilation

Manufacturer's standard

Acoustic performance rating

Manufacturer's standard

Thermal -
Whole window U-value

Up to 1.6 W/m²K

British Fenestration Rating Council Window Energy Rating

Can achieve Window Energy C Rating

Frame -

Square cut

Finish as delivered -

Marine quality powder coat


Insert single colour requirement, contact manufacturer for information.

Film thickness (minimum)

Manufacturer's standard


Manufacturer's standard

Glazing or infill -

Consult manufacturer


28 mm double glazed unit


Manufacturer's standard

Operation -


Fixing features

Manufacturer's standard

Decorative sash horns

Not required


Standard product features



Maximum sash weight:

126 mm.

Thermal break:

Extended polyamide thermal break to enhance thermal performance.

Product Options

Dimensions and configurations:

Available up to 1600 (based on 1300 mm frame height) x 2800 mm (based on 750 mm frame width) (w x h).

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