






🌬️ Stop the backflow, boost your airflow – ventilation perfected!
This 4-inch backdraft damper features a galvanized steel body, aluminum flaps, and a stainless steel spring mechanism designed to prevent air backflow in ventilation ducts. Easy to install and compatible with most metal duct systems, it enhances airflow efficiency in residential and commercial HVAC setups.







| Manufacturer | dojobkinb |
| Item Weight | 4.6 ounces |
| Package Dimensions | 5 x 4.69 x 3.74 inches |
| Size | 4 Inch |
| Item Package Quantity | 1 |
| Batteries Included? | No |
| Batteries Required? | No |
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