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| SKU | hpa4070 |
| Brand | Miuwauer |
| Size | 4 Inch |
| Material | Galvanized Steel, Aluminum, Stainless Steel, Rubber, Plastic |
| Temperature Rating | Up to 50°C |
| Installation Type | Push-in into duct |
| Duct Compatibility | Flexible or non-flexible ventilation ducts (not for plastic pipes) |
| Country of Origin | Not stated by manufacturer — US retail version, sourced from authorized US retailers and authorized brand partners |
This item:
Miuwauer 4 Inch Backdraft Damper HVAC Duct Blocker | Prevents Airflow When Fan Is Off
1,927
This item
Miuwauer 4 Inch Backdraft Damper HVAC Duct Blocker | Prevents Airflow When Fan Is Off
1,927
Total price:
12,603
You save 4,671 (27%) Extra3 items selected
3 items
12,603You save 4,671 (27%) Extra
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Stop Unwanted Airflow, Save Energy
The Miuwauer 4-inch backdraft damper is constructed from durable galvanized steel with stainless steel components, designed to prevent unwanted airflow into your home. This damper features spring-loaded folding blades that open automatically with low air volume, ensuring efficient one-way airflow control. Its integrated rubber gasket creates an airtight seal, crucial for maintaining your home's climate control and preventing energy loss. Imported directly from authorized US retailers and authorized brand partners, this damper offers a reliable solution for your HVAC needs.
This backdraft damper is engineered for practical performance, effectively blocking cold air, wind, and backflow from entering your ventilation system. The smooth-running spring mechanism ensures optimal opening and closing, while the airtight seal minimizes air leakage. It is designed for straightforward installation by simply pushing it into the ventilation duct, making it suitable for both flexible and non-flexible ducting applications. The materials used can withstand temperatures up to 50°C, providing durability for various HVAC uses.
Suitable for a wide range of applications including AC units, dryer vents, exhaust fans, range hoods, and heating systems, this damper is a versatile component for residential, commercial, and industrial HVAC setups. While it is designed for steel and flexible ducts, please note it is not intended for use with plastic pipes due to size variations. Ensure proper horizontal or vertical installation with the spring positioned correctly for optimal flap operation.
Engineered for Efficient Airflow Management
This Miuwauer backdraft damper utilizes a precisely calibrated spring mechanism and precisely cut blades to ensure it opens and closes automatically with minimal air volume. This prevents the common issue of cold air drafts entering your home when fans are off, maintaining a more consistent indoor temperature. Unlike basic blockers, its design focuses on creating an airtight seal, reducing energy loss and improving the efficiency of your heating and cooling systems.
Ideal for Indian Homes, Not for Plastic Ducts
This damper is an excellent choice for Indian homes needing to prevent backflow in AC, dryer, or exhaust systems, especially in coastal or humid regions where air quality control is vital. Its robust construction ensures durability. However, it is specifically designed for metal or flexible ventilation ducts and cannot be used with plastic pipes due to varying sizes and material compatibility. If you have plastic ducting, you will need a different solution.
Typical situations where Miuwauer 4 Inch Backdraft Damper HVAC Duct Blocker | Prevents Airflow When Fan Is Off helps — illustrative scenarios, not customer reviews.
Preventing hot air entry into a home in Delhi during summer.
Install the Miuwauer 4-inch backdraft damper in the exhaust fan duct. Its automatic blades and airtight seal prevent hot outside air from entering, maintaining a cooler indoor environment and reducing AC load.
Stopping cold drafts from entering a kitchen in Shimla during winter.
Use the Miuwauer damper in the kitchen exhaust hood duct. It automatically closes when the fan is off, blocking cold air and preventing heat loss, thus improving comfort and energy efficiency.
| Application | AC, dryer vent, exhaust, extractor, range hoods, heating systems, fans, vents |
| Function | Prevents cold air, wind, and backflow into ventilation ducts |
| Cost per use | N/A |
| Shelf life after opening | N/A |
| Reapplication math | N/A |
| Contraindications | Not for use with plastic pipes |
| Allergens / common irritants | N/A |
| Feature | Miuwauer 4 Inch | Others |
|---|---|---|
| Material | Galvanized steel, aluminum flap, stainless steel spring/axis, rubber gasket | Varies; often basic plastic or thin metal, may lack airtight seal |
| Airflow Control | Automatic spring-loaded blades, airtight seal | Manual or basic flap, often leaks air |
| Durability & Temp Rating | Up to 50°C, robust construction | Lower temperature limits, prone to rust or breakage |
| Installation | Easy push-in for flexible/rigid metal ducts | May require screws or clamps, compatibility issues |
| Cost per unit | ₹1,927 per damper | ₹200-₹500 (approx.) |
About Miuwauer
Miuwauer specializes in HVAC components, offering durable and functional solutions for airflow management in residential and commercial applications.
Compliance & Legal
No product-specific compliance warnings identified. Standard imported-goods terms apply: customs duties & GST paid; for personal use in India; follow the manufacturer's usage instructions on the packaging.
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| Attributes |  |  |  |  | |||
|---|---|---|---|---|---|---|---|
| Spec | |||||||
| Price |
8,459 12,173 |
2,217 3,094 |
4,913 7,210 |
5,623 7,649 |
3,307 4,637 |
4,153 5,906 |
| Rating | 4.38(8) | 4.50(366) | 4.30(197) | 4.60(19K+) | 4.60(19K+) | 4.60(19K+) | 4.63(8) |
| Brand Name | Miuwauer | AC Infinity | Miuwauer | AC Infinity | AC Infinity | AC Infinity | Weller |
| Source | US Retail | US Retail | US Retail | US Retail | US Retail | US Retail | US Retail |
| Sold By | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow |
