Active Ventilation KV-9-TP-WT is a tail pipe that can be installed with a roof vent to provide ventilation for your home. It is made of durable materials and is easy to install. The KV-9-TP-WT can be used to ventilate attics, bathrooms, and other areas of your home. It can help to improve air quality, reduce moisture, and prevent mold and mildew growth. The KV-9-TP-WT is a great way to improve the comfort and health of your home.