A100 Bathroom Check Valve Exhaust Pipe Ventilation Check Valve(Expansion Screw+Aluminum Foil Tape)

A100 Bathroom Check Valve is designed for use in ventilation systems. It prevents backflow of smoke and other odors.

• Product type: Drain Strainers
• Material: ABS
• Key feature: prevents backflow of smoke
• Inclined design for easy flap operation
• Blue silicone sealing ring for good sealing and no air leakage
• Large exhaust holes for quick ventilation
• Light fan can be blown open without affecting mist exhaust
• Function: prevents backflow of smoke, peculiar smells, and mosquitoes
• Applicable size: ventilation diameter about 10-14cm
• Inner pipe diameter: 8/10/12cm
• Size: approximately 16.5 x 6cm