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This is our highest specification range, designed to retro-fit in place of original box sash windows in older properties, or to create a traditional appearance in new-builds.

These windows offer the best of both worlds, boasting an enviable combination of authentic period styling and features, together with the very latest in timber window technology for improved security and double glazed for superb thermal and acoustic performance.

Our timber Box Sash Window uses cords, weights and pulleys to counter balance the sashes in the traditional way with the weights housed in a ‘box’ created by the internal and external liners over sailing the frame on each side. Typically, our Box Sash Windows would be set back in a ‘rebated reveal’ construction so that the box is mostly hidden by the external brick or stone although it can also be seen positioned close to the face of the brickwork with the box on show and dressed with an architrave.

Our Box Sash Windows are equipped with our patented click fit staff and parting bead which allows the sliding sashes to be easily removed for future maintenance and decoration.

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Established in 1954 Mumford & Wood has since become the UK’s premier manufacturer of high quality timber windows and doors.

Recognised within the industry as market leaders, Mumford & Wood has built a well-earned reputation amongst architects, developers and aspirational home owners for products of outstanding quality.

All our wooden windows and doors are proudly made in our Tiptree factory using time-served craftsmanship and state of the art technology, using the finest quality wood.