Vertical Slider

A fully ovolo detailed vertically sliding window with sash options to ensure equal sightlines and a tilt-in facility to allow easy cleaning. The 128 mm front to back outerframe dimension makes it ideally suitable for traditional timber box sash replacement.

A choice of Georgian bars, moulded or through horns and a mechanically jointed deep bottom rail which give the appearance of a traditional box sash window.

Wider cill options are also available to enable a range of installation options.

The window system is BSI kitemarked and BBA assessed.

General information


[Size, Minimum and maximum window sizes vary across the range of window styles; please consult the manufacturer for further details]


Uniclass 2015

Pr_30_59_98_92 Unplasticized polyvinyl chloride (PVC-U) window unitsPrimary


L10/30 PVC-U windows

L10/350 PVC-U windows

Specification data - Unplasticized polyvinyl chloride (PVC-U) window units

Product Reference

Vertical Slider

Colour/ Finish



See 'Options' below and insert requirements.


See 'Options' below and insert requirements.


24 mm insulating glass units

Internally glazed

Ovolo and square knock-in beads


Manufacturer's standard

Cam locks and keeps

Lift handles and pull rings

Pivot bars

Spring balances

Tilt latches


Not required

Spectus former

For 75–150 mm cavities.



Machined run through sash horns

Stick-on Georgian bars

Weather bar

Standard product features

Frame depth:

128 mm front to back.


Recycled composite material (RCM) reinforcement, aluminium and steel reinforcements are used In accordance with the system supplier's recommendations.


Double glazing to BS 6262 can be supplied using 24 mm insulating glass units depending on thermal and acoustic performance requirements.


  • Vertical Sliding windows can accommodate a variety of hardware including balances, pivot bars, tilt latches and locking mechanisms in a range of finishes.
  • All hardware meets the requirements of BS 7412.
  • Windows fitted with high security hardware meet the requirements of PAS 24.


  • Energy efficient windows achieving a Window Energy Rating (WER) of Bands C - A+
  • A minimum U value of 1.6 W/m²K can be achieved to meet current Building Regulations
  • Co-extruded bubble weather seals and pile seals ensure the performance meets the requirements of BS 6375-1.

Product Options

Colour/ Finish:

A range of foiled colours are also available on request. Consult manufacturer for further details and lead times.

  • Agate grey RAL 7038.
  • Anteak.
  • Anthracite grey (smooth) RAL 7016.
  • Anthracite grey RAL 7016.
  • Basalt grey RAL 7012.
  • Black brown RAL 8022.
  • Brilliant blue RAL 5007.
  • Chartwell green BS14C35.
  • Cream RAL 9001.
  • Dark green RAL 6009.
  • Dark oak FL-F1.
  • Dark red RAL 3011.
  • English oak.
  • Hazy grey RAL 7001.
  • Irish oak.
  • Light oak RAL 8001.
  • Mahogany RAL 8017.
  • Natural oak FL-G.
  • Rosewood RAL 8017.
  • Rustic oak 1.
  • Siena PR.
  • Signal grey (smooth) RAL 7004.
  • Slate grey (Finesse) RAL 7015.
  • Slate grey RAL 7015.
  • Steel blue RAL 5011.
  • Swamp oak ST-F.
  • Walnut V.
  • White RAL 9010.


Minimum and maximum window sizes vary across the range of window styles; please consult the manufacturer for further details.


A former, cavity closer and dpc; available in standard and check reveal options for building into reveals in new build constructions. The former is suitable for cavity sizes of 75–150 mm (130 mm for check reveal.

Third party certifications
  • System Assessed
  • BS EN 12608 Profile - Kitemark - KM 12874
  • BS EN 12608/PAS24 Enhanced Security Windows - Kitemark - KM 33510
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