Repa Market 4 Inch Backdraft Damper – Inline Duct Backflow Preventer with Gravity Flap – PVC Backdraught Shutter for Bathroom Fans, Extractor Fans, Hydroponics, HVAC Ventilation Systems
US$3.98
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US$3.98
Price when purchased online
Free shipping
Free 30-day returns
Sold and shipped by healinghousett.com
Free 30-day returns Details
Product details
| Management number | 237344515 | Release Date | 2026/07/10 | List Price | US$3.98 | Model Number | 237344515 | ||
|---|---|---|---|---|---|---|---|---|---|
| Category | |||||||||
- PRECISE FIT: Male fit coupler (goes INSIDE the duct) with an insertion diameter of 3.89 inches and an insertion depth of 1.18 inches. Designed for standard 4 inch round ventilation ducts used in bathroom fans, inline extractor fans, hydroponics setups, and general air movement systems.
- BACKDRAFT PROTECTION: Gravity-operated flap prevents reverse airflow, cold drafts, and unwanted odors from entering through your ventilation ducting.
- DURABLE PVC CONSTRUCTION: Made from lightweight, corrosion-resistant PVC that performs reliably in temperatures from 5°F to 160°F, making it suitable for everyday ventilation use (not for dryer vents or high-heat kitchen hoods).
- QUIET & LOW-RESISTANCE OPERATION: Balanced lightweight flap opens easily under airflow and closes gently when the fan stops, maintaining smooth, efficient ventilation without mechanical noise.
- EASY INLINE INSTALLATION: Simple push-fit design installs directly inside flexible or rigid ducts with no special tools needed - ideal for DIY home ventilation upgrades.
| ASIN | B084BP47PT |
|---|---|
| Size | 4" Inch |
| Color | White |
| Brand Name | Repa Market |
| Unit Count | 1.0 Count |
| Thread Type | NPT |
| Manufacturer | Repa Market |
| Material Type | Plastic |
| Connector Type | Slip |
| Item Dimensions | 3.94 x 3.94 x 2.44 inches |
| Number of Pieces | 1 |
| Included Components | Male Fit Connector with Suhutter |
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