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020 8981 5400

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Unique structure security door consisting of metal profiles and sheets brings out all the difference. Made from steel and dressed in wood (waterproof UMIDAX, EDM, Wood Veneer) or painted metal finishes so nobody can tell its a high spec premium security door. Any style, shape or colour – every single security door made is bespoke!

We also offer wooden and aluminium windows. Sash windows, sliding doors, casement windows, french doors, bi fold doors. Top quality, comes in a broad range, double or triple glazed. Any style or colour to match all budgetary needs.

We are professionals throughout the whole supply chain and specialise in design, manufacturing and fitting of security doors and windows for over 9 years. The company offers a wide range of doors and windows for houses, apartments, vaults, hospitals, hotels, theatres and many other public and privately owned buildings.

Professional and friendly installation service is available to carry out doors or windows replacement, because your product is only as good as the installer that has done the job. Our fitters are trained to the highest standard, has over 10 years of experience and are CERTASS trained.

No matter what size of a job Knight’s Mark is offering free quotations with no obligation for security doors and windows. We will also give you the best advice in choosing the best option for you.