Our Twist lock double wall stainless steel chimney features:1. Advantages:1).Male and female cap shaped by mold, connection is easy 2). 25mm space between inner and outer pipes provides supe

1. Inner wall anti-corrosion and covered by insulation to make sure the gas emitting stable and avoid dew point corrosion2. Outer wall as structural support avoid flue corrosion and ensure safety3. Th