Size Name:4 Inch 100 mm (4") Connector with back draft damper for round ducting This Anti-Back draft Coupler can be used In line with ducting etc to prevent drafts entering the vented room whilst still allowing vented air to be exhausted when the fan is working. Can be fitted Verticaly or Horizontaly In addition: Will reduce heat loss when room is not being extracted. Prevent animals entering through the ducting. Work as a normal coupler to join to lengths of ducting. Reduce noise's and smells from entering through ducting Application Supply and exhaust ventilation of various premises. Connection of same diameter air ducts. Preventing back draft of air when ventilation system is switched off. Design Made of white plastic. Equipped with a backdraft damper for back flow prevention. Designed for direct installation into air duct and can be secured with lock ring or or suitable tape such as duct tape or aluminium tape. Mounting: The damper design ensures its mounting on the round air ducts by means of clamps. Ensure the vertical position of vane rotation axis. When installing the damper in the ventilation system the air stream direction shall be considered. USE: Use when you need to stop smells flowing backwards within ducting, or when you have 2 or more extractor fans connected to same duct run. Perfectly suited for ducting your Bathroom or Kitchen extractor fan, Hydroponics, In-Line Extract Fans, or Cooker Hood. This backdraught shutter can be used as a part of a long duct run for a variety of purposes including whole house ventilation, passive stack vent, air conditioning, positive pressure, Tumble Dryer Venting, HVAC, and Heat Recovery Systems.
M**E
Works well
The portable ac unit I purchased allowed hot air to flow back into my house when not being used. This damper fixed the issue
A**T
All Plastic, but works OK
I replaced a years-old metal damper with this. Well-enough made, and fits the old ducting.
Trustpilot
1 month ago
1 month ago
