The chimney has an inner diameter of 110 mm, outer diameter of 210 mm. Suitable for small fireplaces, stoves, small and medium-sized stoves. Insulated chimney length 1000 mm, overall length of 1250 mm with rain hood. Polished stainless 304 material. Connecting pipe 19590750 or water heater 19590320 fits between wood heater and insulated chimney 19591200.