Spectus Vertical Sliders

Spectus’ market leading Vertical Slider is an authentic looking sash window with Ovolo finishing, that combines all the benefits of high performing modern materials and functionality with period character and design.

Advanced technology and traditional design come together to create the perfect solution for period properties across both the domestic and commercial market.

Designed by Spectus Window Systems to deliver all the benefits of high performance modern materials, the Vertical Slider is a cost-effective solution for period style properties.

The PVC-U Ovolo frames provide optimum strength, superior thermal protection and excellent weathering performance and with the minimum maintenance, will retain their appearance year after year.

Much thought has gone into the Spectus Vertical Slider to ensure that the attractive style of a traditional sash window is retained, whilst providing all the benefits that modern technology can provide.

For ease and cost-effective fabrication, each sash option is post co-extruded. Thermal properties are enhanced through the use of 24mm glazing as standard. Excellent weathering performance is increased with a pile seal detail on the sash edges and outer frame and air flow specification can be achieved through the use of trickle or glazed-in vents to suit particular applications as required.

Spectus are registered members of a number of industry regulators and manufacture to the recognised BS Standards of quality and performance. Profiles are extruded under a quality management system that conforms to BS EN 9001:2008 and are kitemarked under license to BS EN 12608. Rest assured when you chose a Spectus system, your investment is in safe hands. Whatever colour and finish you choose Spectus systems also come with a 10-year guarantee.

Spectus profiles are manufactured to the highest standards from a formulation that includes a high impact modifier to withstand cold weather and a UV light resistant pigment to maintain the colour and pigmentation. This formulation prevents the PVC profile from degrading, bending or warping, ensuring manufacture of the highest quality product.

Structural strength is enhanced through the use of steel or aluminium reinforcements through the internal chambers of the profile and to further increase stability, all fixings and hardware are secured to the reinforcements.

Our team of technical experts have invested years of engineering, design and product development experience to deliver a product that delivers unrivalled durability and longevity, without having to cover high maintenance costs or compromise the appearance of the property.

Spectus’ Vertical Slider isn’t just a period style window, through continuous development the Vertical Slider delivers all the benefits modern technology brings.

  • For simple and cost effective fabrication, each Vertical Slider has post co-extruded gaskets, resulting in improved weathering protection
  • 24mm glazing comes as standard enhancing thermal performance
  • Pile seal detail on the sash edges and outer frame increases protection against weathering
  • Airflow specification can be achieved through the use of trickle or glazed in-vents to suit particular applications as specified

The Vertical Slider comes with a number of additional options enabling customers to custom make the window that’s perfect for their property.


  • Georgian bars and decorative horns provide a truly period look
  • White, chrome or brass hardware
  • End caps for both the Cills and sash stop to create the perfect finish


  • Available in a large range of colour and woodgrain foil finishes allowing customers to match their windows to the age and style of the property
  • Standard colours include white, light oak, rosewood, cream and white woodgrain
  • Customers can mix and match, for example; opting for a woodgrain finish to the exterior and white on the inside


  • Choice of three sash options allowing a variation in styles, to best suit the application
  • Equal sightline option for the top and bottom sashes, plus a deep bottom rail create an authentic period appearance
  • Tilting sashes allow ease of cleaning from the outside of the property from the inside

You can rest assured that your Spectus VS window comes with all the highest quality assurance. All materials are manufactured under the strictest quality controls, and the Spectus network or fabricators and installers provides continuity as well as quality. Safety and security are of prime importance and every detail has been considered to ensure that all hardware and locking options exceed requirements.

Choosing a PVC window will mean the end of costly, time consuming painting every two to three years. A damp, soft cloth is all it takes to clean a PVC frame. But the Spectus VS makes it even easier, with the use of a pivot bar. This allows the window to tilt, so that the exterior glass can actually be cleaned from the inside. Maintenance simply couldn’t be easier.
So why not contact us to get a free, no-obligation quotation from a member of our friendly team.

Brochure Downloads

Spectus Vertical Sliders

Spectus Vertical Sliders

Pilkingtons Texture Glass Brochure