UPVC Casement Windows have sashes which open outward. The standard casement window has a UPVC frame, window latch, snap on insect screen, friction hinges and a single, glazed, grey anti-sun glass. The unit easily opens outward and offers maximum ventilation and graceful styling. This high-tech design has multiple chambers within the frame that creates a thermal barrier to reduce air loss and heat transfer. They are the perfect window choice for many areas of residential and commercial properties.