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"Dempsey Dyer are leading manufacturers of windows, doors and conservatories and have been a trusted name in the industry since 1977. Specialising in high quality timber as well as uPVC and aluminium, these products are manufactured in the UK and are the perfect choice for homeowners looking to enhance their living space."@en-gb
<https://www.dempseydyer.co.uk/news/upvc-vs-aluminium-bifold-doors>