Draft Blocker - Backdraft Damper Duct (4'' Inch)

Description

🌬️ Seal the draft, own the comfort — no more unwanted air sneaks!

The 4'' Draft Blocker Backdraft Damper is a robust ventilation accessory crafted from galvanized steel with aluminum flaps and stainless steel spring and axis. Designed to prevent reverse airflow in HVAC systems, it fits standard 4-inch ducts and installs easily by pushing into the pipe. Ideal for residential, commercial, and industrial use, it enhances air quality and energy efficiency by stopping backdrafts in exhaust fans, range hoods, and heating ducts.