A casement is a window that is attached to its frame by one or more hinges at the side. They are used singly or in pairs within a common frame, in which case they are hinged at the top or the outside, and swings either outwards or inwards. Its sleek, simple design makes it suitable for most types of property. Lumei uPVC casement window is individually made with your choice of frame, glass and configuration.Each Lumei uPVC casement windows are individually designed according to your specifications and manufactured by our team of skilled craftspeople, using the highest-quality, energy-efficient materials and our own exclusive uPVC formula. With a 10-year guarantee on the frames and 15-year guarantee on the sealed units, they offer long-lasting peace of mind.