Casement window

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 on the outside. Casement windows are often held open using a casement stay. Windows hinged at the top are referred to as awning windows, and ones hinged at the bottom are called hoppers.

Double Glazing Casement window

Double casement windows, also known as French casement windows, have two sashes that open from the center with no center stile, offering a wide, unobstructed pane of glass. This custom option is hinged on each side and can operate with a single, easy-to-reach handle.