Sash

Definition

A sash is a frame that holds glass, forming the movable part of a window.

Purpose

The purpose of a sash is to hold the glass securely in place within a window frame, allowing for the opening and closing of the window to provide ventilation and light.

Examples of Use

• Double-hung windows have two movable sashes that slide vertically to open.
• Casement windows have a sash that swings outward on hinges for ventilation.
• Sliding windows feature sashes that move horizontally within the frame.

Related Terms

• Window Frame: The fixed outer structure that supports the window sash.
• Glazing: The installation of glass in a window or door frame.
• Mullion: A vertical or horizontal bar between adjacent window sashes.

Notes

Sashes can be made from various materials, including wood, vinyl, and aluminum, and are designed to hold the glass securely while allowing for easy operation of the window.