The Convesa KC Twinwall 200mm Twinwall Flue is a high-quality flue designed for use in fireplaces and stoves. Made by the reputable brand Convesa,. The 200mm diameter ensures a proper fit for most standard chimney sizes, and the included firestop plate provides a secure and safe connection to your chimney system. Perfect for maintaining a safe and efficient heating system in your home. See photos for part details