This part is for 4n1 models only.
Air Conditioning Valve Condensate Check Valve Drain Pipe Valve High Strength
1X PVC Fan Check Valve For Bathroom/Kitchen Valve Round Pipe Backdraft Damper
Manual Switching Valve Check Valve Tool Excellent Air Tightness High Durability
Non-return Valve for Domestic Extractor Fans Extractor Fan Check Valve Damper
1X PVC Fan Check Valve For Bathroom Kitchen Valve Round Pipe Backdraft Damper .
