---
product_id: 413673384
title: "4 inch Backdraft Shutter Damper Back Draft Blocker, One-Way Airflow Ducting Insert Backflow Preventer with 2 Inline Springs Loaded Folding Blades, 4\", HVAC Extractor Fan Vent, Range Hoods"
price: "$U1772"
currency: UYU
in_stock: true
url: https://www.desertcart.uy/products/413673384-4-inch-backdraft-shutter-damper-back-draft-blocker-one-way
store_origin: UY
region: Uruguay
---

# 4 inch Backdraft Shutter Damper Back Draft Blocker, One-Way Airflow Ducting Insert Backflow Preventer with 2 Inline Springs Loaded Folding Blades, 4", HVAC Extractor Fan Vent, Range Hoods

**Price:** $U1772
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** 4 inch Backdraft Shutter Damper Back Draft Blocker, One-Way Airflow Ducting Insert Backflow Preventer with 2 Inline Springs Loaded Folding Blades, 4", HVAC Extractor Fan Vent, Range Hoods
- **How much does it cost?** $U1772 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.uy](https://www.desertcart.uy/products/413673384-4-inch-backdraft-shutter-damper-back-draft-blocker-one-way)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

iPower 4 inch Backdraft Shutter Damper Back Draft Blocker, One-Way Airflow Ducting Insert Backflow Preventer with 2 Inline Springs Loaded Folding Blades, 4", HVAC Extractor Fan Vent, Range Hoods

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09L7MNXMF |
| Best Sellers Rank | #352,234 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #2,107 in Registers, Grilles & Vents |
| Customer Reviews | 4.1 4.1 out of 5 stars (210) |
| Item Weight | 8.8 ounces |
| Item model number | 4 inch Backdraft Shutter Damper Back |
| Manufacturer | iPower |
| Product Dimensions | 4.92 x 4.92 x 6.2 inches |

## Images

![4 inch Backdraft Shutter Damper Back Draft Blocker, One-Way Airflow Ducting Insert Backflow Preventer with 2 Inline Springs Loaded Folding Blades, 4", HVAC Extractor Fan Vent, Range Hoods - Image 1](https://m.media-amazon.com/images/I/61oUeNNT2pL.jpg)

## Questions & Answers

**Q: Can anyone tell me the temperature rating of this fan?  Can it be used as a forced hot air booster fan?**
A: I'm not exactly sure what the rating is but I believe it's likely to handle it. I mean how hot is the air? If it will melt skin or something then I wouldn't use it... Otherwise should be fine blowing through multiple hoods with 1000s.

**Q: Is the motor for this fan brushless?**
A: Yes it is.

Best regards

**Q: What is the wattage of this fan?**
A: I just went out and checked the label on the fan:  It draws .9 amps at 95 watts.  It blows a lot harder than you would expect for that wattage.

**Q: Is it 770 or 430cfm the spec seems conflicting. Anyone knows the watts**
A: I see your confusion in the specs. I didn't notice that when I bought one. Pretty sure it's 770. I added one of these to it because it was so powerful: http://www.amazon.com/Active-Air-ACSC-Speed-Adjuster/dp/B007TFTITS/ref=pd_sim_lg_2?ie=UTF8&refRID=0370HH92VNG69ATPWJ67

## Frequently Bought Together

- iPower 4 inch Shutter Back Draft Blocker, One-Way Airflow Ducting Insert Backflow Preventer with 2 Inline Springs Loaded Folding Blades, 4" Backdraft Damper, for HVAC Extractor Fan Vent, Range Hoods
- EesTeck 4" (Diameter) Adjustable 304 Stainless Steel Duct Clamps Hose Clamp Pipe Clamp Air Ducting Clamp worm drive hose clamps (4Pcs, 91mm-114mm)
- AC Infinity Flexible 4-Inch Aluminum Ducting, Heavy-Duty Four-Layer Protection, 25-Feet Long for Heating Cooling Ventilation and Exhaust

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**Shop now:** [https://www.desertcart.uy/products/413673384-4-inch-backdraft-shutter-damper-back-draft-blocker-one-way](https://www.desertcart.uy/products/413673384-4-inch-backdraft-shutter-damper-back-draft-blocker-one-way)

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*Product available on Desertcart Uruguay*
*Store origin: UY*
*Last updated: 2026-02-25*