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Looking for flush casement windows or traditional doors?

A family run business - dedicated to installing the finest windows and doors for period properties.


Hi. Welcome to Box Clever.

Tony WybrowMy name is Tony Wybrow and for the past 20 years I have been dedicated to sash windows - installing the finest quality products available - with an absolute passion for their design, elegance and quintessentially English style.

During that time there have been huge developments in the design, quality and performance of the frames available – particularly the woodfinish PVCu ‘timber alternative’ ranges.

Here at Box Clever, we have assembled a professional and knowledgeable team. From offering honest, tailored advice on product options, to our experienced, specialist installers - approachable, efficient and taking great pride in their work.

Have a look at our gallery to see the size and diversity of projects we’ve been involved with.

I look forward to hearing from you to see if we can help with yours.

Tony Wybrow


Product Ranges

  • "We are delighted with the windows. Thank you. You are fortunate to have such an efficient and personable team."

    Mr S, Ealing, March 2018

  • "Another great job, my thanks to you all."

    Mr W, London, Feb 2018

  • "All went well on Friday and the boys did a great job."

    Mr C, Oxford, Feb 2018

  • "Another fantastic job carried out by your guys."

    RW, Silchester, April 2018

  • "Thank you. I am absolutely delighted with the windows. The team worked really quickly and cleanly so please pass on my thanks."

    HC, Ealing, March 2018

Like some more information? call us today on 0800 292 2968 and just ask.

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We're keen to offer the highest standards in products and services

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