Hopper Window

Definition

A Hopper Window is a window whose sash pivots on an axis along the sill and that opens by tilting toward the interior of the building.

Purpose

Hopper windows are designed to provide ventilation while maintaining privacy and security. Their inward tilt makes them ideal for basements and bathrooms, where they can help control airflow without compromising safety.

Examples of Use

1. Basements: Allowing ventilation in basement spaces while preventing water ingress.
2. Bathrooms: Providing privacy and ventilation in bathrooms.
3. Utility Rooms: Ventilating small utility spaces.
4. Commercial Buildings: Used in lower-level commercial spaces for controlled ventilation.

Related Terms

• Awning Window: A window that pivots along the top edge and opens outward.
• Casement Window: A window that is hinged on the side and opens outward.
• Sash: The frame that holds the glass in a window and can be moved or fixed.

Notes

Hopper windows must be installed with proper sealing to prevent drafts and water leakage. Their design makes them easy to clean and maintain from the inside.