window sashes

A window sash is the framework that holds the glass panes in a window. It can be fixed or movable, allowing the window to open, close, or stay shut. Sashes are typically made of wood, vinyl, or aluminum, and they guide the window's operation and ensure it fits securely in the frame. In double-hung windows, for instance, both the top and bottom sashes slide vertically. Sashes may include additional components like weatherstripping to improve insulation and hardware for opening and locking. Overall, they are essential parts that provide support, security, and functionality to the window.