Casement Windows l Tilt/turn Windows l Vertical Slider Windows l Composite Doors


Casement Windows


The System 10 Casement window range is designed to provide the maximum flexibility for fabricators and clients alike.


Based on a range of 58mm or 70mm sections, it utilises the same sash, bead, gaskets and ancillary sections providing low stock holding potential for the fabricator, and low maintenance potential for the client. At the same time it provides the ideal range of products to suit any window replacement programme or building construction type within the social housing market.

The suite allows for the production of top hung and side hung casements to accept a full range of hardware, allowing full compliance with all the latest building regulations, and meeting all the latest product testing standards.


System10 Casement Windows – Key Features

  • 58mm and 70mm frame depth allows maximum flexibility for
    fabricators and clients alike
  • Internally beaded and externally beaded options
  • PVC-U screw ports allow secure fixing of hardware
  • Products designed to accept the latest hardware types
  • Products enable compliance with latest building regulations
  • Glazing options up to 28mm sealed unit depth
  • Products tested to meet the performance requirements of BS7412 wind and water testing – classification severe
  • Products tested to meet latest security standards of BS7950
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Tilt/turn and Pivot Windows


Tilt and Turn Windows and Pivots, are traditionally aimed at refurbishment projects where there is a high rise element, and a requirement for cleaning to be carried out safely from the inside of the building.


In Scotland, these windows are used traditionally as the mainstay of window design rather than the casement type which is used throughout the remainder of the UK.



Tilt and Turn Windows,

Tilt/turn and Pivots offer similar features, notably the fact that they open inwards, which is very distinct from traditional casement windows, and have found favour with many architects and clients who have projects for which an open out window is not suitable.


Tilt and Turn – Key Features

  • Two operation windows, first or tilt position offers ventilation, second or turn position offers cleaning and egress
  • Child restrictors and ‘safe’ locking handles provide safety in use features
  • High security locking mechanisms
  • Windows tested to BS7950
  • Windows open inwards into the room


Top Swing - Key Features

  • Unique 4 chamber profile system for enhanced thermal performance
  • Unique twin seal system for weather performance
  • Multi position child restrictors
  • Window restricted in reversed position for safety in use and cleaning
  • Window reverses within the axis of its own hinge and does not come into the room
  • Side swing option available


Pivot – Key Features

  • Designed to replicate large timber pivots often found in high rise applications
  • Large maximum sizes allow replacement of like with like
  • Multi point ‘perimeter’ gearing enables high security, and maximum compression on weatherseals, providing excellent weather performance
  • Window restricted for child safety
  • Window restricted in reversed position for safety in use and cleaning
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Vertical Slider


The System 10 traditional sliding sash window is designed to offer clients the potential to perfectly match the existing timber product in their housing stock.


Taking all the finest points of the traditional design, the System 10 PVC-U version matches the aesthetic appeal while offering superior performance and maintenance benefits.

Weights and pulleys are replaced by sophisticated spring and spiral balances, and a unique tilt facility to enable cleaning of sashes safely from the inside.


System 10 Vertical Sliders – Key Features

  • Traditional front to back profile dimension to match existing box arrangements
  • Sections designed to match traditional aesthetic appeal
  • Deep bottom rail option
  • Upper and lower sashes tilt inwards for ease of cleaning
  • Traditional astragal Georgian bar arrangements
  • Traditional hardware design and functionality
  • Full range of style options and sizes to enable replacement of traditional products


Conservation Option

WHS Halo has also developed a bespoke version of its Vertical Slider specifically for conservation areas. Working with key clients and local planning departments to meet their specific design requirements, the new conservation version combines all the benefits of a PVC-U window, with very detailed design features.


Conservation Vertical Slider - Key Features

  • Mortice and Tenon’ appearance in key joints
  • Bevelled sashes
  • Period Georgian bar
  • Traditional travel stops
  • Traditional horn detail
  • Traditional hardware design
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Composite Doors


The System 10 range of composite door is designed as a ‘double rebated’ system, and suites perfectly with the remainder of the System 10 range of PVC-U windows to make coupling, or the use of sidelights easy to achieve.


The product has been developed to offer the highest weather performance, robust security, attractive aesthetics, and is available in a range of styles and colours.

The range of style includes solid panel and part glazed options to mirror traditional door designs, and offers a wide range of minimum and maximum style parameters.

Composite Doors – Key Features

  • Open in and open out options
  • ‘Double rebated’ sealing
  • Aluminium low level thresholds inclusive of part M compliant options - single doors
  • French Door option
  • Doors tested to PAS 23 and PAS 24
  • Choice of styles
  • Choice of colours
  • Suites fully with the rest of the System10 range for ease of coupling and use of sidelights.






















Technical Illustrations

The images below are links to PDF documents. You will need a copy of Adobe Acrobat Reader to open these files. If you do not have this software on your computer it is freely available from the Adobe website.

Casement Windows

Tilt and Turn, Top Swing
& Pivot Windows

Vertical Slider

Composite Doors


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