Crafted with attention to detail, The Precision Windows Vertical Slider window (also known as Sash and Case window) combines the functional benefits and performance of modern PVC-U windows with the feel, aesthetic appeal and operational simplicity of a traditional style window.  Our Vertical Slider windows have a timeless elegance made with beautiful proportions and symmetry. They have the true looks of the original timber sash window, retaining all of the character of the property itself.  The modern Vertical Slider not only emulates the aesthetics of it’s traditional timber equivalent, but also offers additional benefits such as ease of maintenance of PVC-U.