Windows and Glazing includes everything you need to let light and natural ventilation into any space, both internally and externally – think glazing systems, glazing units, passive windows, secondary windows, window accessories, window components, window screens, and windows.

Windows and accessories are used in the vast majority of commercial, residential, and industrial properties, including gyms, sports centres, schools, hotels, hospitals, shopping centres, restaurants, and office buildings.

Through SpecifiedBy, you can search the biggest range of products in the UK, allowing you to source and compare the best windows and accessories solutions for your project, from some of the industry’s leading suppliers, including Alcoa, Astralux, Bereco, Colt UK, DBP Partners Lts, Décor Systems, Eurocell, Glassolutions, and Green Building Store.

Search and compare curtain walling, direct glazing, fire resisting glazing systems, glazing clips, double glazing units, leaded glass, toughened glass, wired glass, triple-glazing units, window hinges, window locks, window pivots, and much, much more.

Spectus Vertical Sliding Windows

Spectus Window Systems
Spectus; market leading Vertical Slider combines all the benefits of high performing modern material and functionality with period character and design. Widely recognised as one of the best PVC-U alternatives to traditional timber box sashes our Vertical Slide...

Spectus Flush Tilt & Turn Windows

Spectus Window Systems
This revolutionary flush tilt-turn window is an ideal solution or both medium-rise and high-rise buildings, such as residential housing, offices, hospitals and universities. It has been specifically designed to prevent the framework from overlapping to give a...

Spectus NEW Fully Mechanically Jointed Vertical Slider

Spectus Window Systems
Blending authentic sash window styling with superb performance Sash windows are a design classic, but traditional timber frames don’t offer the long-term performance and easy care of modern materials. With every detail of our PVC-U Vertical Sliders accura...

Spectus Curtain Walling

Spectus Window Systems
The Spectus curtain walling system consists of thermally-broken aluminium which is PVC-U clad, both internally and externally to ensure a perfect match to the colours of windows, doors and panels. The dimensions are designed to incorporate 70mm depth frames or...

Spectus Casement Windows

Spectus Window Systems
Spectus provides a range of Elite 70 and Elite 63 casement windows, which are available in a range of styles from single top or sing hung openers to multi-lights and French windows. Provided internally or externally glazed offering bevelled, chamfered or ovolo...

Spectus Fully Reversible Windows

Spectus Window Systems
Our Fully Reversible windows are perfect for medium or high-rise properties, or indeed anywhere where there are access limitations. It combines excellent thermal and weathering performance in an easy to clean and maintain window. It has a 70mm depth frame and ...

Spectus Two-Part Cill

Spectus Window Systems
We all know that a small amount of damage to a cill translates into a big problem when you want to fix it. It’s an issue on construction sites where cill noses get bashed, battered and scraped. It’s a pain on refurbishment projects and an eyesore in an ...

Spectus Flush Casement Windows

Spectus Window Systems
Spectus flush casement windows mimic the traditional appearance of period properties, whilst offering superb energy efficiency and lower heating bills. They offer the perfect solution for planners in areas protected by conservation orders looking for a flus...

Spectus Tilt & Turn Windows

Spectus Window Systems
Spectus Tilt & Turn windows have a dual opening action and are available in Elite 70 and Elite 63. The windows are provided with all round locking, internally glazed, open-in, providing good security and weather tightness. The tilt before turn operation provid...

Windows & Glazing Building Products