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Search over 1000 windows on SpecifiedBy, from leading Windows manufacturers including; Olsen Windows & Doors, Aluk and NorDan UK.

You can refine your search further by sub-categories of Windows, such as Casement Windows, Vertical Sliding Windows and Tilt & Turn.

Important criteria to consider when specifying Windows include; Features, Colours and Certifications.

Shield - Casement Windows

The Shield window system was early entrant on the market and to this day is still known hand in hand with the Synseal brand. A fully chamfered , fully BBA accredited and fully kitemarked 70mm Shield window system built to exceptional standards. Advantages o...

Insulated Timber Eco Doorsets

Performance Doorset Solutions Ltd
up to 35dB achievable with appropriate perimeter seals Every doorset made to size to the customers precise project specification Featuring a 54mm thick door leaf, comprising an insulating polystyrene core, sealed between two 6mm aluminium stabilising sheets an...

Traditional Timber Sash Windows

Perfect Crystal Windows
The Traditional Sliding Sash Window is very popular throughout the British Isles. The technical design allows for single glazing or provides high-performance double or triple glazing with the application of perimeter gaskets using traditional weights and pulle...

Conservation Windows

Marvin Architectural
Marvin Architectural’s Conservation Windows include the Traditional Weighted Sash Window and the Traditional Casement Window and has been developed for those who wish to replace windows in listed, conservation and period buildings wanting to retain the histo...

Diamond Suite - Casement

It not only looks good, it's security conscious as well by complying with BS7950 (enhanced security) in addition to achieving BBA and BSI accreditations. A comprehensive range of ancillaries allows varying product types to be manufactured, including Mock Horn ...


Smart Systems
EcoFutural is a versatile range of high performance commercial windows suitable for use as tilt turn, pivot, casement, fixed and open out casement windows. All EcoFutural profiles utilise Smart’s chambered polyamide thermal break technology which creates ...

FTP-V P2 Natural Pine, Laminated Double Glazed Centre Pivot Window

- FSC Certified. - BBA Approved (02/3944). - Semi-automatic pressure ventilation V40P to prevent wind gusting. - “topSafe” security and safety offering reinforced hinge and keep together with a steel slat to the lower part of the sash to achieve at leas...

Flush casement triple glazed timber aluminium composite windows (71/63mm)

GreenSteps Ltd
GreenSteps flush casement windows for high performance domestic and commercial projects. KEY CHARACTERISTICS: Timber aluminium composite frames - Frames are made of engineered pine as standard, but oak, larch and special hardwoods are available on request....

Traditional Weighted Sash Windows

Marvin Architectural
Marvin Architectural’s Traditional Weighted Sash Windows come with the best technology in the industry in terms of superior insulation and meet heritage requirements for conservation and listed buildings throughout the UK. The options for bespoke profiles...


If you're looking to improve the energy efficiency of your project without compromising on style, then the Stormsure Energy+ casement window range offers the solution. Awarded the top A+ energy rating, this beautiful range ensures your home benefits from super...
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Did you know that the Height for products within the Windows category, can range from 250 mm to 3500 mm and the average is 1135 mm?

Windows - Various Window Types

Malbern uPVC Windows & Doors Ltd
Trust Malbern to supply and fit windows that suit the style of your home, give added kerb appeal yet make your rooms seem lighter and brighter too. That's because our new windows have bevelled edges which make them look slimmer and more streamlined than tradi...

Royale Aluminium Sash Windows

Duration Group
Our Royale Sash Window incorporates the traditional styling of wooden box sash windows with the advantages of a thermally broken aluminium profile. A stylish, low maintenance and authentic sash window that is suitable for use in heritage and conservation areas...

Duration VS Plus Vertical Sliders

Duration Group
Our VS Plus Sash Windows have a square, clean and simple design that is suitable for most applications. It is perfect for use in all types of modern architecture and provides a low maintenance alternative to timber sash windows. A combination of sealed units u...

Heritage Casement Windows

Heritage Flush Casement Windows are fitting for listed properties or those governed by the demands of conservation. Bereco Casement Windows feature lambs tongue mouldings and bars, fixed sashes for non opening lights creating equal sight lines, casement stays,...

Casement Windows 

Warwick Glass
Casement windows offer comfort, value and security - and complement every style of home. Casement windows are hinged at the side or top, double-glazed and fully sealed. They provide great insulation to improve the energy efficiency of your home. Sculptured or...

UPVC Sash Windows

Enfield Windows
UPVC SASH WINDOWS The vertical sliding sash window range combines the elegance of traditional sash windows with the benefits of modern materials. Manufactured from the PVCu they are strong, will not rot, warp or require repainting; ensuring that they retain th...

Residence 9 windows

Enfield Windows
The Residence 9 ( R9 ) window system is relatively new to the market place, specifically designed to replicate the 19th century Flush Sash Timber Window. This stunning product is taking the stereotypical uPVC windows of today to another level. Such is the buil...

Wooden Casement Window

Marvin Architectural
Whether you’re replacing historic casement windows or are developing a new build with the authentic look of traditional casement windows, Marvin Architectural has the right solution for your needs. The Marvin Architectural Traditional casement windows offer ...


Choice of chamfered profiles using REHAU TOTAL70C, or fully sculptured using the REHAU TOTAL70S system. Both systems offer extremely slim sight-lines and enhanced aesthetic appeal. Inward opening for effective fire escape, easy cleaning and where restricted sp...

Commericial Aluminium Windows

Barton Windows Ltd
Barton Windows offer the perfect choice of windows for commercial buildings, providing a maintenance-free glazing solution that's environmentally friendly and built to last. The latest innovation in aluminium, this window system offers robust quality in a wid...
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Did you know that the most common Certifications for products within the Windows category are Secured by Design , ISO 9001 and ISO 14001?'

SAS Hybrid Series 1 Window System

Senior Architectural Systems Ltd (SAS)
Hybrid Series 1 Window is a full range of timber aluminium composite windows. All timber is PEFC certified. May be used independantly or in combination with Hybrid Series 3 Curtain Wall system. Hybrid combines the long life and low maintenance of aluminium ext...