One of the latest products from Cortizo, Cortizo 4900 Sliding HI has advanced thermal

and acoustic features and an ultra-smooth opening technique.

So, this gorgeous sliding window is sturdy, yet light.


Cortizo provides a large selection of high-quality aluminium doors and windows, of which Bi-fold Door Factory

are proud suppliers and installers.  All products are built with robustness in mind,  offering a long-lasting

solution to any homeowner’s needs. So, for a state-of-the-art  window that is reliable,

durable, and built to an exceptionally high standard, look no further.


PRODUCT Specifications

  • Sleek Design with slimline profile with 1.6mm thickness for a modern aesthetic
  • Versatile Options include bi-colour systems, RAL, mottled, rough, wood effect, and anodized finishes
  • Enhanced Features with maximum glazing of 36mm, anti-bacterial powder coating for added functionality

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Benefits of Cortizo Sliding Windows

Made from high-quality aluminium, the Cortizo Sliding Window is robust, long-lasting, and resistant to all types of weather. Its acoustic insulation feature is beneficial for those who wish to live peacefully and free of noise pollution, adding an extra layer of privacy to the home.

Cortizo windows have fantastic thermal insulation, making them extremely energy efficient, which can ultimately save you money, as well as having a positive environmental impact. Cortizo’s commitment to sustainability and reducing environmental waste is demonstrated during the manufacturing process, where aluminium is recycled, and raw materials and products are utilised.

Our bespoke service means that we can customise products so that they blend well with just about any interior/exterior. The Cortizo sliding windows come in an unlimited range of colours – in fact, the entire RAL colour chart – and can be coated in various powders or texture effects.

Technical Specifications

  • Sliding window and door system with a straight aesthetic which has a slim interlock of just 35 mm.
  • The window will allow a glass thicknesses of up to 36mm, which will increase the thermal and acoustic performance.
  • These stunning aluminium sliding windows can be configured in a variety of ways to suit any home, with the option of sliding of 2, 3, 4 or 6 sashes, and 3 rails.
  • The window sashes of up to 240kg can reach the dimensions of 2200 (W) x 2600 (H) mm.
  • Maximum acoustic insulation Rw = 40 dB
Air permeability (EN 12207)Clase / Class 4
Water tightness (EN 12208)Clase / Class 7A
Wind resistance (EN 12210)Clase / Class C5

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Get a Free Quote

Thank you for considering Cortizo Sliding Windows. If you would like to receive a free, no-obligation quote, please don’t hesitate to get in touch.

We offer a wide range of options from Windows and are happy to work with you to find the best solution for your needs and budget.

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Our Products

The Bifold Door Factory offers a wide selection of premium products, including stunning bifold and sliding doors, windows, roof systems, and glazing services for numerous applications. 

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