---
product_id: 9121781
title: "Speedi-Products AC-BD 08 8-Inch Diameter Galvanized Back Draft Prevention Damper"
brand: "speedi-products"
price: "$36.58"
currency: USD
in_stock: false
reviews_count: 8
url: https://www.desertcart.us/products/9121781-speedi-products-ac-bd-08-8-inch-diameter-galvanized-back
store_origin: US
region: United States of America
---

# 8x8x8 inches 2.94 lbs 8" Diameter Speedi-Products AC-BD 08 8-Inch Diameter Galvanized Back Draft Prevention Damper

**Brand:** speedi-products
**Price:** $36.58
**Availability:** ❌ Out of Stock

## Summary

> 🚀 Elevate Your Air Quality with Ease!

## Quick Answers

- **What is this?** Speedi-Products AC-BD 08 8-Inch Diameter Galvanized Back Draft Prevention Damper by speedi-products
- **How much does it cost?** $36.58 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/9121781-speedi-products-ac-bd-08-8-inch-diameter-galvanized-back)

## Best For

- speedi-products enthusiasts

## Why This Product

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

## Key Features

- • **Durable Design:** Galvanized construction ensures longevity and reliability.
- • **Compliance Made Easy:** Consult local codes for seamless installation and peace of mind.
- • **Optimize Your Airflow:** Enhances intake and exhaust efficiency for a comfortable environment.
- • **Hassle-Free Maintenance:** No batteries required, just install and forget!
- • **Energy Efficiency Champion:** Insulate ductwork to save on energy bills and boost comfort.

## Overview

The Speedi-Products AC-BD 08 is an 8-inch diameter galvanized back draft prevention damper designed for optimal airflow in intake and exhaust duct systems. Weighing just 2.94 pounds and measuring 8x8x8 inches, it’s easy to install and maintain, ensuring compliance with local building codes while enhancing energy efficiency.

## Description

Product Description          Speedi-Products 8-Inch Galvanized Sheet Metal Round Back Draft Damper. Ideal for use with intake or exhaust duct systems. Can be used for Remodeling, Do it yourself and New Residential projects.             From the Manufacturer          Speedi-Products 8-Inch Galvanized Sheet Metal Round Back Draft Damper. Ideal for use with intake or exhaust duct systems. Can be used for Remodeling, Do it yourself and New Residential projects.

## Features

- Ideal for use with intake or exhaust duct systems
- Seal joints with approved duct mastic sealants
- Insulate Ductwork for improved energy efficiency and comfort
- Consult your local building codes for approved installation practices

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Applied Applications International |
| Part Number | AC-BD 08 |
| Item Weight | 2.94 pounds |
| Product Dimensions | 8 x 8 x 8 inches |
| Item model number | AC-BD 08 |
| Item Package Quantity | 1 |
| Batteries Required? | No |
| Warranty Description | 1 Year |

## Images

![Speedi-Products AC-BD 08 8-Inch Diameter Galvanized Back Draft Prevention Damper - Image 1](https://m.media-amazon.com/images/I/61HDcemXKQL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐ 4.0 out of 5 stars







  
  
    Good Product
  

*by L***S on Reviewed in the United States on January 29, 2014*

Gravity close doors, no springs.  Fiber reinforced tape holds the doors on, no metal hindge.  Seems to do the job just fine.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Unique Design
  

*by T***G on Reviewed in the United States on September 7, 2019*

Great concept for closing the damper.  The hinge is some type of fiber reinforced fabric or plastic and uses gravity to close the damper.  I used this damper in a horizontal position and you have to be careful which direction you install the damper.  The hinge has to be vertical and the slant of the hinge has to be such that that gravity will pull the damper shut.  If you are installing the damper in a vertical orientation, it will only work for exhaust systems, unless the outside intake is below the damper for intake applications.  My only complaint is they should have included directions on how to install or better diagrams on the damper itself.

### ⭐⭐⭐ 3.0 out of 5 stars







  
  
    OK, but not sufficient for some wind/pressure conditions and applications
  

*by C***N on Reviewed in the United States on December 26, 2015*

I had a specific non-typical project I experimented with this damper for--an air exchange system for a low thermal mass attached sunspace.  This particular damper didn't work for my application.  On windy days the sunspace internal pressure was easily enough to open the damper and keep it open, forcing cold air from the sunspace into my home.  In the end I ended up buying an electric/automated damper which has worked great:http://www.amazon.com/review/R1WBBYKN6SD16H?_encoding=UTF8&ASIN=B0015S4LQU&cdMSG=addedToThread&cdPage=&channel=detail-glance&newContentID=Mx1P7WQ89ITNBE7&newContentNum=1&nodeID=16310091&store=industrial#CustomerDiscussionsNRPBThis damper probably works well for most applications, but not for mine.  But thought I would post this for the few people who might be doing something similar to my project.

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-03*