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4" Inch / 100 mm Duct Backdraft Blockers - Pipe Connector with Backdraught Shutter - Backflow Preventer - Dryer Vent Adapter - Inline Air Extractor - Pipe Line Coupler with Valve

4" Inch / 100 mm Duct Backdraft Blockers - Pipe Connector with Backdraught Shutter - Backflow Preventer - Dryer Vent Adapter - Inline Air Extractor - Pipe Line Coupler with Valve

Q: Will drafts from outside open the flap?

It is designed so that when installed correctly, the flap/door will be in a closed position and only able to be opened from one direction. So, to answer the question, no outside pressue will not open the flap (as long as it is installed correctly).

Q: Is this to be installed on a vertical or horizontal run or both?

Horizontal. It's own weight keeps it closed.

Q: Can I use this to replace the cap where the dryer vent comes out of the house? Does it fit in the hole?

It is just a gravity actuated valve like devise and is not designed for an exterior application. Rain, insects and rodents would be able to enter the dwelling through that simple valve.

Product ID: 504446575

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Details

Size
100mm
Material
Plastic
Brand
Repa Market
Colour
White
Item dimensions L x W x H
10 x 10 x 6.2
Number of pieces
1

📏100mm diameter fit

🔄Balanced damper shutter

🛠️Easy DIY installation

Frequently Bought Together

4" Inch Duct Backdraft Blocker - Pipe Connector with Backdraught Shutter - Backflow Preventer - Dryer Vent Adapter - Inline Air Extractor Fan - Pipe Line Coupler with Valve

AC Infinity Flexible 4-Inch Aluminum Ducting, Heavy-Duty Four-Layer Protection, 8-Feet Long for Heating Cooling Ventilation and Exhaust

4" Inch Plastic White 3 Way T Joints - Duct Splitter for Exhaust Fan Dryer - Round Duct Hose Connector - Vent Air Pipe Joint - 90 Degree Three Branch Junction

Description

🚫❄️ Stop drafts, odors & noise before they start!

HASSLE FREE DIY SETUP - Comes fully assembled with male spigot for quick, tool-free installation.
SMART BACKDRAFT PREVENTION - Balanced damper blocks cold air, odors, and noise from creeping back in.
LIGHTWEIGHT DURABLE DESIGN - Compact 50g plastic build ensures longevity without bulk.
SEAMLESS 4 DUCT COMPATIBILITY - Perfectly fits standard 100mm ducts for effortless integration.
VERSATILE VENTILATION SOLUTION - Ideal for bathrooms, kitchens, HVAC, hydroponics, and dryer vents alike.

The Repa Market 4" Duct Backdraft Blocker is a lightweight, easy-to-install inline valve designed to fit standard 100mm ducts. Featuring a balanced damper shutter, it effectively prevents cold air, odors, and noise from flowing back through dryer vents, extractor fans, and HVAC systems, making it an essential upgrade for modern home ventilation and energy efficiency.

Specifications

Manufacturer	Repa Market
Product Dimensions	10 x 10 x 6.2 cm; 50 g
Size	100mm
Colour	White
Material	Plastic
Shape	Circular
Item Package Quantity	1
Number of Pieces	1
Special Features	Easy to Install
Usage	Commercial/Residential
Included Components	Male Fit Connector with Suhutter
Batteries included?	No
Batteries Required?	No
Item Weight	50 g

Have a Question? See What Others Asked

Will drafts from outside open the flap?

How tall is it?

Is this to be installed on a vertical or horizontal run or both?

Can I use this to replace the cap where the dryer vent comes out of the house? Does it fit in the hole?

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₨12536

Duties & taxes incl.

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