2-Pack 4" HVAC Manual Volume Damper with Sleeve – Galvanized
2-Pack 4" HVAC Manual Volume Damper with Sleeve – Galvanized
2-Pack 4-Inch HVAC Manual Volume Damper with Sleeve – Galvanized Steel, Adjustable Airflow
Take full control of your HVAC system's airflow with this 2-pack of 4-inch manual volume dampers. Built from durable galvanized steel and aluminum alloy, these dampers let you fine-tune or shut off air distribution through individual ducts — keeping your heating and cooling system balanced and efficient throughout your home or workspace. Made in China.
Key Features
- High-Quality Galvanized Construction: Made from galvanized iron and aluminum alloy for excellent corrosion resistance, high-temperature tolerance, and lasting durability — no warping or deteriorating over time.
- Adjustable Airflow Control: Features a side-mounted rotating handle that easily adjusts the airflow volume or closes the duct as needed. Ideal for balancing air distribution across multiple zones — note: designed for air balance, not complete air termination.
- Simple Slide-In Installation: Just slide the damper into the connected ductwork and secure with a pipe clip and tape — no specialist tools required.
- Versatile Compatibility: Compatible with heating and air-conditioning systems, range hoods, ventilation systems, and more.
- Compact Dimensions: Outer port diameter approx. 10 cm; height approx. 15.5 cm. Fits standard 4-inch round duct connections.
- Silver Finish: Clean, professional-looking silver colour blends seamlessly with most HVAC ductwork.
Specifications
| Duct Size | 4 Inch (approx. 10 cm outer diameter) |
| Height | Approx. 15.5 cm |
| Material | Galvanized Iron / Aluminum Alloy |
| Colour | Silver |
| Quantity | 2 Sets per Package |
| Control Type | Manual (Rotating Handle) |
| Battery Required | No |
| Wireless | No |
| Origin | Made in China |
Package Contents
- 2 × 4-Inch HVAC Manual Volume Damper with Sleeve
Note: Slight colour variations may occur due to lighting and display settings. Measurement tolerance is ±1–3 cm.
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Frequently Asked Questions
Q: What is a manual volume damper used for in an HVAC system?
A: A manual volume damper is installed inside ductwork to regulate and balance the flow of conditioned air through different zones or rooms. By turning the rotating handle, you can increase, reduce, or stop airflow through a specific duct branch, helping to keep temperatures consistent throughout your space.
Q: Will this 4-inch manual damper completely seal off airflow in a duct?
A: This damper is designed for air balancing rather than full air termination. While it significantly reduces airflow when closed, it is not intended as a complete airtight seal. For best results, use it to fine-tune and distribute airflow across your HVAC system.
Q: How do I install this HVAC duct damper?
A: Installation is straightforward — simply slide the damper sleeve into the connected 4-inch duct pipe and secure it firmly using a standard pipe clip and HVAC duct tape. No advanced tools or professional expertise are required for a basic installation.
Q: Is this damper compatible with flexible ducting?
A: Yes, this 4-inch volume damper is compatible with both rigid and flexible 4-inch duct systems, making it suitable for heating systems, central air conditioning, range hood ventilation, and other standard HVAC applications.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.