KAT Box Sash windows are made to bespoke sizes in our factory in Macclesfield and have been carefully designed and engineered over many years to replicate the authentic design and period features of a traditional timber Box Sash window.
You can choose the style, frame shape, hardware, colour, glazing and other special features including authentic Georgian Bars to suit your property. We also offer ‘the’ solution for sensitive period buildings and for properties in Conservation Areas. Our market leading box sash window comes with an extended 10 year warranty and design and engineering testing has shown that they have a life expectancy in excess of 25 years.