This window style originated in the 17th century and continues to offer elegant glazed opening solutions with optimum ventilation and practicality guaranteed.
Our window is modern, secure, virtually maintenance free and manufactured from high impact, durable uPVC. uPVC box sash windows authentically replicate the look of timber but are virtually maintenance free.
The thermal properties of uPVC are excellent and these windows can be supplied in a wide range of finishes. From six feet away it is extremely difficult to tell if the window is timber or uPVC. Mechanically jointed windows now available on request.
A little time and care with your choice of colour are advised and your selection should be influenced by the style of your property, surrounding architecture or your others windows and doors.
White ash both sides; Cream ash both sides; Golden oak both sides; Golden oak out / white uPVC in; Rosewood both sides; Rosewood out / white uPVC in
Or choose from a wide range of RAL colours
24mm (4-16-4) double glazed sealed units
Planitherm Total Plus Low Emissivity, soft coat glass
Argon filled units
Warm Edge Spacer (Black or Grey)
U value of 1.4 on A rated
We can offer 'Secure by Design' on our window and door ranges.
U Values from 0.7, A* Energy Rated, and environmentally conscious products.
Many of our products comply with FSC, PAS 23/24, CE Marking, and are tested by BM Trada.
Professional advice and guidance for all building projects.
"My experience with International Doors and Windows was excellent. They were competitive on price and provided top quality products and services."