Bi-fold doors, also known as folding doors, are a type of door that opens by folding back in sections or panels.

Here are some key features and aspects of bi-fold doors:

1. Panels: Bi-fold doors consist of multiple panels that are hinged together. The number of panels can vary depending on the size of the opening and the design preferences.
2. Material: These doors can be made from various materials, including aluminum and UPVC.
3. Operation: Bi-fold doors typically operate on a track system, allowing them to slide and fold smoothly. Hinges connect the panels, and they can be folded to one or both sides of the opening.
4. Glass: Bi-fold doors often feature large glass panels to maximize natural light and provide a clear outside view. The glass can be supplied double-glazed or triple-glazed for greater insulation and energy efficiency.
5. Security: Security features such as multi-point locking systems are commonly integrated into bi-fold doors to ensure the safety of the property.
6. Configurations: Bi-fold doors come in various configurations, allowing for customization to fit different architectural designs and preferences. Common configurations include two panels folding in one direction or multiple panels folding in opposite directions.
7. Weather Sealing: To ensure weather resistance, bi-fold doors are equipped with weather seals and gaskets to prevent water and air infiltration.
8. Versatility: Bi-fold doors are versatile and can be used in various settings, including residential homes, commercial spaces, and even as room dividers within a building.