Kikerike 4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Deflector

Kikerike 4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Deflector

Q: Can this be used to stop my Hot water tank from blowing out the flame on windy days?

sorry, I did not use it for the flame from HWT.

Q: can this be used on a dryer vent or will the foam seal melt?

I would say the dryer heat could damage or maybe even melt the seal. Maybe you could try removing the gasket and wrap a strip of fiberglass in it’s place.

Q: Would this help keep out bugs?

Yes it creates a barrier and only opens one way from the inside of house

Q: Would this fit between two sections of standard, 4 inch semi-rigid ducting? Looking to add to bathroom vent fan ductwork.

Yes, that's exactly how you would use it. Make sure to buy the correct HVAC aluminum (metallic) duct tape for the connection. A clamp cannot be used bc the crushing pressure would inhibit the flapper from working properly.

4.4/5

Product ID: 508225406

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↔️One-way airflow backdraft prevention

⚙️Spring-loaded flap for optimal sealing

🛠️Galvanized steel & aluminum build

Frequently Bought Together

4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Deflector

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EesTeck 4" (Diameter) Adjustable 304 Stainless Steel Duct Clamps Hose Clamp Pipe Clamp Air Ducting Clamp worm drive hose clamps (4Pcs, 91mm-114mm)

Description

🌬️ Stop the backflow, start fresh airflow!

COMPACT LIGHTWEIGHT - At just 132g and 4 inches, it fits seamlessly without adding bulk or weight to your ductwork.
SMART AIRFLOW CONTROL - Prevents unwanted backflow and recirculation, optimizing your ventilation system’s efficiency and indoor air quality.
EFFORTLESS INSTALLATION - Simply push into any 4-inch ventilation pipe for a secure fit—horizontal or vertical, no extra tools needed.
VERSATILE COMPATIBILITY - Perfect for ACs, exhaust fans, range hoods, heating ducts, and more—ideal for residential, commercial, and industrial use.
DURABLE INDUSTRIAL GRADE MATERIALS - Galvanized steel body with aluminum flaps and stainless steel spring ensures long-lasting performance and corrosion resistance.

The Kikerike 4 Inch Draft Blocker is a robust backdraft damper crafted from galvanized steel, aluminum, and stainless steel components. Designed for easy insertion into 4-inch ventilation ducts, it prevents air backflow and recirculation, enhancing ventilation efficiency across residential, commercial, and industrial settings. Lightweight and versatile, it ensures optimal airflow control without compromising installation simplicity.

Specifications

Manufacturer	Kikerike
Item Weight	132 g
Package Dimensions	13.79 x 11.4 x 9.3 cm; 132 g
Size	4 Inch
Color	Sliver
Item Package Quantity	1
Batteries Included?	No
Batteries Required?	No

Have a Question? See What Others Asked

Can this be used to stop my Hot water tank from blowing out the flame on windy days?

can this be used on a dryer vent or will the foam seal melt?

Would this help keep out bugs?

Would this fit between two sections of standard, 4 inch semi-rigid ducting? Looking to add to bathroom vent fan ductwork.

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Received my product in pristine condition. Great service overall.

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Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

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