UPVC Casement Window

Sometimes known as side hung windows, casement windows come with one sash that is connected to the outer frame through butt hinges or friction hinges, which are excellent for more air circulation.casement window, earliest form of movable window, wood or metal framed, with hinges or pivots at the upright side of the vertically hung sash, so that it opens outward or inward along its entire length in the manner of a door. One frame, separately movable, of such a window is called a casement sash.