The Halo Flush Sash Window System

Making the ordinary, extraordinary and redefining the typical window to be so much more should be justification enough, but the Halo flush sash is a design classic reborn. It is stylish, practical and boasts strong eco credentials that also adds comfort to the long list of reasons why an increasing number of home-owners are choosing flush sash over more conventional window designs.

19th Century looks with 21st Century benefits

The flush sash window has been reborn, with the intention of replicating the design of a 19th Century timber flush sash window often found in smaller hamlets and countryside cottages. The revival of flush sash is capturing the attention of architects and designers who are looking to maximize performance without compromising on good looks. Simplicity is the secret to the design success of this highly versatile window system. A timeless classic, the flush sash has reversed its traditional routes as many home-owners are favouring this design as a modern contemporary window that boasts style and modernism for town houses, loft apartments and larger family homes. Be inspired to unlock the real design potential for your home, achieving greater eye catching results that will ultimately increasing curb appeal and re-sale value.

Built by craftsmen and fitted by experts

This bespoke made to measure window range is manufactured using skilled craftsman that take great pride in their work. A typical Definitive collection installer will be local to you and has built a hard earned reputation for the quality of their workmanship.


PVCu is generally a lot less expensive than timber, but by no means a poor relation. Virtually maintenance free, our windows and doors will not rot, warp or twist and there is no need for sanding or painting. You will be pleasantly surprised when budgeting for great design, comfort and high performance windows and doors as the Halo flush sash represents incredible value over other alternatives..

The freedom of expression

Something for everyone is what drives us to design, innovate and produce new window styles that can tick the ever growing list of desirable features now required by architects, developers and discerning home-owners alike. Our extensive product range has no boundaries as the choice is yours to personalise with a wide variety of RAL colours, wood-grain foil options and specialist glazing that control light, energy efficiency, safety, security and sound proofing.

Good looks come as standard…

More & more, window design choices are becoming an essential and integral part of the design process. No more so than with our flush sash casements that provide equal and balance sight-lines due to every aperture having an opening or dummy sash. Be the envy of your neighbours and throw away the conventional in favour of this timeless classic. The Flush sash is minimal and modern on the outside but displays some of its 19th century traditional characteristics on the inside. Available in both our System 10 (bevelled) and Rustique (fully sculptured) profiles, there is a solution for everyone’s taste.

Built to last

All of our products are covered by a comprehensive 10-year warranty that is available through our installer network. Please ask you installer for further details.

Straight to the top of the class with an ‘A’

The Definitive Collection is one of the industry’s leading and most trusted brands. We are proud supporters of the British Fenestration Ratings Council that provide energy ratings for windows and door industry. The Definitive Collection is passionate about great design which is not only about looks but also about performance. We hold one of the largest range of energy efficient ‘A’ rated windows with the inclusion of several options on Flush sash for both double and triple glazed.


Looking for some inspiration? Browse our rustique frames installations to help find the perfect product for you.


Browse our stunning colour range below, we have a whole range of colours to suit any home. Download a full colour guide here.

View Gallery

Be inspired and take a look at some of our latest installations. Find a style and colour to suit your home.

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