A PVC Fan Box is a type of electrical junction box used to mount an exhaust fan or ceiling fan. It is made of PVC (polyvinyl chloride), a type of plastic material that is durable and resistant to moisture, making it ideal for use in damp or humid environments. PVC fan boxes are designed to fit between the ceiling joists or studs and provide a secure mounting point for the fan. They are typically installed in bathrooms, kitchens, or other areas where exhaust fans or ceiling fans are needed to help remove moisture, fumes, or odors from the air. PVC Fan Box comes in various sizes and configurations to accommodate different types of fans, and they typically feature knockouts or cutouts for electrical wiring.