4" Inch Duct Backdraft Blocker - Male Fit Pipe Connector with Backdraught Shutter - Backflow Preventer - Dryer Vent Adapter - Inline Air Extractor Fan - Pipe Line Coupler with Valve

Description

🚫 Stop drafts, odors & noise—breathe smarter, live better!

The 4" Inch Duct Backdraft Blocker by Repa Market is a lightweight, easy-to-install male fit pipe connector with an integrated backdraught shutter. Designed to prevent reverse airflow, odors, and noise, it’s compatible with standard 4-inch ducts and ideal for bathroom, kitchen, dryer vents, HVAC, and hydroponic ventilation systems.