False ceiling, also known as drop ceiling or suspended ceiling, refers to a secondary ceiling that is installed below the main ceiling of a room or building.

The false ceiling is usually hung from the main ceiling with the help of a framework made of metal or wooden components, and it creates a gap or space between the false ceiling and the main ceiling.

False ceilings serve a variety of purposes, including:

1. Aesthetic improvement: False ceilings are often used to enhance the appearance of a room by hiding unsightly wires, pipes, and ducts that run along the ceiling.
2. Acoustic insulation: False ceilings can also help to reduce noise levels by absorbing sound waves.
3. Thermal insulation: False ceilings can be used to improve the insulation of a room, thereby reducing heat loss or gain and helping to regulate the temperature.
4. Lighting: False ceilings can be used to install lights or fixtures, thereby providing a well-lit and attractive environment.

False ceilings can be made from a variety of materials, including gypsum, mineral wool, PVC, metal, and wood, and they can be designed in a variety of shapes and sizes to suit different architectural styles and requirements.