---
product_id: 38581004
title: "Butterfly Backdraft Damper (7 Inch) (BD 7)"
brand: "hvac express"
price: "Bs.1210"
currency: BOB
in_stock: true
reviews_count: 8
category: "Hvac Express"
url: https://www.desertcart.bo/products/38581004-butterfly-backdraft-damper-7-inch-bd-7
store_origin: BO
region: Bolivia
---

# Foam closure shutter - whisper-quiet operation Vertical/horizontal mounting - versatile installation 26 gauge galvanized metal - heavy-duty durability Butterfly Backdraft Damper (7 Inch) (BD 7)

**Brand:** hvac express
**Price:** Bs.1210
**Availability:** ✅ In Stock

## Summary

> 🦋 Elevate your airflow game with silent, solid, and smart backdraft protection!

## Quick Answers

- **What is this?** Butterfly Backdraft Damper (7 Inch) (BD 7) by hvac express
- **How much does it cost?** Bs.1210 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.bo](https://www.desertcart.bo/products/38581004-butterfly-backdraft-damper-7-inch-bd-7)

## Best For

- hvac express enthusiasts

## Why This Product

- Trusted hvac express brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Flexible Fit:** Designed for both vertical and horizontal mounting with crimped ends for easy, secure installation.
- • **Built to Last:** Heavy-duty 26 gauge galvanized metal construction guarantees long-term reliability and rust resistance.
- • **Made in the USA:** Proudly manufactured domestically, ensuring premium quality and supporting local craftsmanship.
- • **Silent Efficiency:** Foam-sealed blades ensure noise-free backdraft protection for a peaceful environment.
- • **Proven Performance:** Trusted design that smoothly opens and closes with gravity—no springs, no fuss.

## Overview

The Butterfly Backdraft Damper (7 Inch) features lightweight, foam-sealed blades for quiet operation and is crafted from heavy-duty 26 gauge galvanized metal. Its versatile design supports vertical or horizontal mounting with a crimped end for easy installation. Made in the USA, this damper reliably prevents backdrafts in appliance venting, combining proven performance with durable construction to keep your space efficient and noise-free.

## Description

Backdraft damper with lightweight blades and foam closure to eliminate noise and increase efficiency. Proven design to protect against backdraft in your appliance venting Easy to install, heavy duty 26 gauge galvanized metal Foamed shutter system for quiet closure Vertical or horizontal mounting, with one end crimped Dampers are available in sizes 3" up to 24" ducting. Specifications Sheet - Butterfly Backdraft Damper

Review: Excellent Backdraft Damper - High quality backdraft damper valve that is worth every penny. The build quality is solid and the function of the backdraft doors is smooth and silent. I am able to easily blow the damper doors open with my own breath and the doors work perfectly with the kitchen exhaust fan that this was installed above. Additionally, the damper valve assembly did not contort its form or warp in any way when installed. Again, solid construction. Make sure to install in the correct orientation so the damper doors will open and close with gravity (no spring is used). Made in USA (Idaho, I believe) When shopping around at Home depot and Lowes they only carried very low quality damper valves that did not function correctly, and appeared to barely hold together. Save the headache and don't buy low quality stuff that will not work, even when newly installed. Very satisfied with this product.
Review: Solid, well made - Had to mount this appropriately 8ft above the stove exhaust fan. Was worried if it would function properly that far away, but it works flawlessly even on the lowest speed. Opens and closes smoothly and quietly every time.

## Features

- Backdraft damper with lightweight blades and foam closure shutter for quiet closure
- Proven design to protect against backdraft in your appliance venting
- Vertical or horizontal mounting, with one end crimped
- Heavy-duty 26 gauge galvanized metal
- Made in the USA

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00BBMPRO0 |
| Best Sellers Rank | #215,010 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #505 in HVAC Ducting |
| Brand | HVAC Express |
| Color | Silver |
| Customer Reviews | 4.9 4.9 out of 5 stars (29) |
| Date First Available | September 14, 2012 |
| Item Weight | 1 pounds |
| Manufacturer | HVAC Express |
| Material | Galvanized Metal |
| Part Number | BD 7 |
| Product Dimensions | 7 x 7 x 7 inches |
| Seat Width | 7 Inches |

## Product Details

- **Brand:** HVAC Express
- **Color:** Silver
- **Item Weight:** 1 Pounds
- **Material:** Galvanized Metal
- **Seat Width:** 7 Inches

## Images

![Butterfly Backdraft Damper (7 Inch) (BD 7) - Image 1](https://m.media-amazon.com/images/I/21RrChYDfXL.jpg)
![Butterfly Backdraft Damper (7 Inch) (BD 7) - Image 2](https://m.media-amazon.com/images/I/61iJL1pv3lL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent Backdraft Damper
*by R***X on February 5, 2024*

High quality backdraft damper valve that is worth every penny. The build quality is solid and the function of the backdraft doors is smooth and silent. I am able to easily blow the damper doors open with my own breath and the doors work perfectly with the kitchen exhaust fan that this was installed above. Additionally, the damper valve assembly did not contort its form or warp in any way when installed. Again, solid construction. Make sure to install in the correct orientation so the damper doors will open and close with gravity (no spring is used). Made in USA (Idaho, I believe) When shopping around at Home depot and Lowes they only carried very low quality damper valves that did not function correctly, and appeared to barely hold together. Save the headache and don't buy low quality stuff that will not work, even when newly installed. Very satisfied with this product.

### ⭐⭐⭐⭐⭐ Solid, well made
*by A***R on October 13, 2023*

Had to mount this appropriately 8ft above the stove exhaust fan. Was worried if it would function properly that far away, but it works flawlessly even on the lowest speed. Opens and closes smoothly and quietly every time.

### ⭐⭐⭐⭐⭐ Nicely built
*by T***A on May 9, 2022*

I installed a blower over the oven do it yourself style. I ordered this piece so that the wind wouldn’t blow back through the vent or make clapping noises. This piece is really well-made smart design that uses gravity to close the flaps with some nice padding so it doesn’t make any noise. I have to say it was pretty satisfying to install this nifty baffle.

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**Shop now:** [https://www.desertcart.bo/products/38581004-butterfly-backdraft-damper-7-inch-bd-7](https://www.desertcart.bo/products/38581004-butterfly-backdraft-damper-7-inch-bd-7)

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*Product available on Desertcart Bolivia*
*Store origin: BO*
*Last updated: 2026-03-10*