- Flue diameter options: 40W model for flue diameter 9-13 cm; 60W model for flue diameter 9-17 cm. - Input power and compatibility: 220V input. For 110-120V supply, a voltage converter is provided. - Wiring: The chimney induced draft fan has two wire ends to connect to the power source. - Intended use and safety: Suitable for household chimneys and fireplaces. The outlet temperature should not exceed 80 degrees C. The fan should be installed more than 6 meters away from the fire source; otherwise it may be damaged. - Function and benefit: Generates suction to rapidly discharge smoke, helping it exit the flue smoothly even when the chimney is poor. Improves smoke discharge speed and overall performance. - Installation and compatibility: Easy to install and very quiet. Compatible with most forms of chimneys and does not require professional technicians. Suitable for use with chimney accessories. - Use scenarios: 1) Wood burning fireplace with weak draft: install the fan to pull smoke up the flue quickly and reduce smoke entering the living area. 2) Older brick or retrofit chimneys: enhance draft to ensure smoke exits the chimney reliably instead of backing up into the room. 3) Seasonal or high usage periods: during cold months or heavy use, use the fan to maintain efficient smoke exhaust and improve overall chimney performance.