The logo for Essex Trade Windows, supplier of quality doors and windows to both the trade and DIY enthusiasts.

Vertical Sliding Sash Windows

The graceful style of sash windows is difficult to beat. The Spectus UPVC Vertical Slider has been designed to provide the authentic, period appearance without the drawbacks. A rated as standard, grace and elegance are now combined with modern performance expectations.


UPVC Vertical Slider Design

Our Spectus UPVC sliding sash windows hold a host of impressive features that not only add to its good looks but also enhance the performance of the window. From the grace of the run-through sash horn to the curvy ovolo frame shape, these are just a handful of the many clever details that work together to create the most graceful and advanced Sliding Sash Window on the market.

Strong and Secure Sliding Sash Windows

Spectus sash windows deliver the most advanced levels of security without adding complex operation. They are practical and come with all the safety features you need. The high security upgrade package meets all the requirements for PAS 24.

A-Rated UPVC Sash Windows

The frames and sashes are multi-chambered and fitted with unobtrusive pile seals to prevent draughts. Our sash windows are fitted with argon filled 24mm double glazed units as standard, meaning we can offer an A rating for energy efficiency as standard. 

Key Features

Huge Colour Range

Premium white as standard or available in 12 colours and finishes.

Traditional Features

Run through sash horns, deep bottom rails and astragal glazing options.

Energy Efficient

Draft free seals and A-rated as standard.

Extensive Choice

Suitable for period replacements, conservation areas and modern new build homes.

Additional Options

  • Acoustic glazing for optimum sound insulation
  • 12 colours and finishes
  • Run through sash horns
  • Deep bottom rails
  • 10 hardware colours and styles
  • Trickle vents to provide additional background ventilation
  • PAS 24 security specification
  • Wide range of decorative glass options including Georgian bars, astragal bars and leaded glass.

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Why Choose Essex Trade Windows


Direct from the Factory

Essex Trade Windows have been manufacturing UPVC windows & Doors for over 15 years. We manufacture to the highest quality as well as offering low prices & short lead times.


Genuine Trade Prices

We offer genuine trade prices & discounts to all of our installers, tradesmen and DIY customers.


10 Year Guarantee

Our supply only UPVC windows & doors come with a 10 year guarantee including frames, glass and hardware as standard.


Made to Measure

All of our products are made to measure to your exact requirements. Due to the vast range of options and finishes there’s sure to be a solution for every project.


Environmentally Friendly

Our Aluplast Ideal 70 windows & doors feature Ecotech70 as standard making it one of the most sustainable window and door systems in the UK.


Quality Products

Quality components from leading brands and fabrication by our highly experienced workforce ensure the highest level of quality.

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