Inner tube material: High-end 1.4404 acid-resistant stainless steel

Outer casing: Brightly polished 1.4301 stainless steel sheet (aesthetic, weather resistant)

Insulation: 25 mm or 50 mm thick, special high temperature ceramic fiber

Maximum flue gas temperature: 600 °C (without seal) / 200 °C (with silicone seal under pressure)

Certification: W3G (resistant to soot burning in wet operation with solid fuel)