Tronic Back Draught Damper 100mm Non-Return Flap for Pipe Connectors

Our review

This Tronic back draught damper is a 100mm non-return flap that fits into a pipe connector. Its job is simple: when your fan pushes exhaust air out, the flaps open; when the airflow stops, they close automatically. That stops cold outside air from being drawn in and prevents exhaust air from flowing back. It suits anyone running an extractor fan, bathroom or kitchen ventilation, or similar ducting where backflow is a nuisance. Before buying, check that your ducting is 100mm and that the damper can sit horizontally, because the flaps only close effectively in that orientation. Compare with other non-return dampers by confirming the diameter, the flap design, and whether horizontal mounting is possible in your setup. Available on Sokonia.