Sealed units


Crystal has its own sealed unit production facility producing around 3,600 units every week. In 2009, Crystal began producing units for its new range of energy efficient windows with A and C WER ratings. Glass is also a popular way for homeowners to individualise their properties. That’s why we offer our customers a comprehensive choice of glazing options including stained, bevelled and leaded units. All Crystal glazing products conform to the BS EN 1279 industry standard.