• Seamless Vertical Sliders

Seamless Vertical Sliders

Genesis Graf welded Vertical Sliders

Combining cutting edge technology without losing the traditional authentic box sash character and style. The Genesis vertical slider is now manufcatured with graf weld as AS STANDARD. It has the strength and durability of old timber box sash and incorporates all the classic features like Georgian bars, decorative horns and deep bottom rails. Not only do the sashes slide but they can also be tilted inwards for ease of cleaning and extra ventilation. Both top and bottom sashes can also be fully removed from the inside, ideal for maintenance, installation or access.

  • When you choose Bison windows you will benefit from:

    A choice of the traditional and slimline Bevelled frame or the sleek, contemporary and curved Ovolo frame.

    Full range of window styles available including Casement, Tilt & Turn, Vertical Slider and Reversible.

    All window components are compatible with Bison’s full product range.

    PCE concealed gaskets provide a superior seal for improved weathering protection.

    Flush glazing provides improved Window Energy Ratings and an enhanced finish.

    Cills available in sizes 85mm, 110mm, 150mm, 180mm & 225mm.

    Bespoke design and planning service to cater for your individual needs.

  • If you are looking for a solution to complement the character and style of your home or if you just want to stand out from the crowd, why not consider colour?

    Bison offers a diverse range of colour, woodgrain and metallic foil finishes, which will enhance the look of your property – whatever the style.

  • Getting “A” marks

    Bison’s product range can achieve a Window Energy Rating of band A.

    They are an effective way to save energy through their protection against thermal insulation loss as they retain insulation in your home, which in turn reduces carbon emissions and can lower your heating bills.


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