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NSB windows is a quality installer of UPVC windows, conservatories, doors, fascias and soffits based in Bedfordshire. We offer a friendly and reliable service from design through to installation and all our windows, doors and converatories come with a 10 year guarantee, We take pride in using quality products and all installations are finished to the highest standards. All our products are energy rated, designed to reduce heat lose and save on heating bills. With excellent standards of security you can be confident your new double glazing products will benefit you and your home for many years to come.