This stainless steel exhaust for gas water heaters includes a chimney elbow and an extension , designed to improve ventilation and exhaust efficiency. The check valve ensures no backflow of gases, enhancing safety. Its durable and flexible design allows for easy installation and long-term use, making it a valuable addition to any heating system. Features -Color:Silver -Material:Stainless steel -Size: 13.50X8.00X8.00cm/5.31X3.14X3.14in -materials: made from stainless steel, offering exceptional durability and resistance to high temperatures -Extended exhaust : the extended design of the chimney elbow increases the exhaust distance, enhancing the efficiency of the water heater's exhaust system -Check valve for safety: features a builtin check valve to prevent the backflow of exhaust gases, ensuring safe and clean indoor air -Flexible corrugated : the corrugated structure provides flexibility and shock resistance, making it suitable for various installation environments -Simple installation process: includes all necessary tools and a detailed installation guide, making the setup process easy and userfriendly Package list: 4 heater exhaust pipe