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70 mm Commercial Flush Casement Windows

Flush casement windows meet the classification for weather tightness to BS 6375-1. Actual performance will depend on size and style.

The 70 mm depth, internally beaded windows have a striking, deep bevelled, appearance. Designed with five chambers in all profiles and fully compatible, it can also incorporate triple seals to maximise thermal performance.

PVC-U commercial flush casement windows are available in a variety of single or multi-light styles, using top hung vents, side hung casements and fixed lights, glazed either internally or externally. Finishes include white, woodgrain on white, or woodgrain - a full range of RAL colours and dual colours are also available on request.

The special design of the commercial flush casement is also ideal for modern apartment buildings and overcomes the issues with the traditional casement style window, when a more ‘flush’ appearance is needed.

Profiles are fabricated to BS 7412 and carry the BSI Kitemark.

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

70 mm Commercial Flush Casement Windows

Colour/ Finish



See 'Options' below and insert requirements.


See 'Options' below and insert requirements.




24 mm insulating unit, glazed internally

28 mm insulating unit, glazed internally

40 mm insulating unit, glazed internally

44 mm insulating unit, glazed internally


Not required

Georgian bars

Leaded glass

Patterned glass


Controllable ventilators

Multi-point espagnolette locking

Permanent ventilators


Not required

Sub frame

Standard product features


Acrylic modified high quality impact resistant white PVC-U extrusion, producing a rigid multi-chamber profile to BS EN 12608, manufactured in accordance with BS EN ISO 9001 and BS EN ISO 14001 and BES 6001 Responsible Sourcing.


Specific members are reinforced with recycled composite material reinforcement/galvanized carbon steel to BS 7412 sealed within the profile central cavity.


  • Double glazing to BS 6262 can be supplied, using 24, 28, 36, 40 and 44 mm insulated sealed units, depending on thermal and acoustic requirements - double glazed units to BS EN 1279.
  • Post co-extruded glazing beads are provided throughout.
  • Bead groove improved to ensure a more secure fit in accordance with PAS24.
  • Standard co-extruded gasket - optional second and third weather seal.


  • Security features multi-point mushroom espagnolette, with night vent facility and lockable handles (dependent upon fire egress requirements).
  • All hardware meets the requirements of BS 7412.
  • Windows fitted with high security hardware meet the requirements of PAS 24: 2012.


Controllable or permanent ventilators can be fitted into the head of the frame immediately above the sash, if required.


  • Energy efficient windows, achieving a Window Energy Rating (WER) of grade up to A+.
  • Triple glazing allows u-values to 0.8 W/(M2.K).
  • Air permeability 600Pa, water tightness 600Pa and wind resistance 2400Pa (weather rating to BS6375-1:2009).

Product Options

Colour foils:

Consult manufacturer for further details and lead times. Note that the RAL colours listed are not exact matches; the manufacturer recommends that the colour match is checked prior to use to ensure suitability. Colour swatch booklets are available upon request.

  • 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 foil 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 foil RAL 9010.
  • White PVC-U RAL 9003.


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

Third party certifications
  • Kitemark - KM12895 - BS EN 12608 Profile
  • KM33523 – BS EN 12608/ PAS 24 Enhanced Security Windows
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