---
product_id: 27061860
title: "Backdraft Damper 4 Inch"
brand: "famco"
price: "AR$198268"
currency: ARS
in_stock: true
reviews_count: 8
url: https://www.desertcart.com.ar/products/27061860-backdraft-damper-4-inch
store_origin: AR
region: Argentina
---

# 4-inch precision fit dual horizontal & vertical use galvanized steel durability Backdraft Damper 4 Inch

**Brand:** famco
**Price:** AR$198268
**Availability:** ✅ In Stock

## Summary

> 🌀 Elevate airflow control with effortless, power-free precision!

## Quick Answers

- **What is this?** Backdraft Damper 4 Inch by famco
- **How much does it cost?** AR$198268 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/27061860-backdraft-damper-4-inch)

## Best For

- famco enthusiasts

## Why This Product

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

## Key Features

- • **Foam Seal Airlock:** Minimizes air leakage for optimized energy efficiency and system performance.
- • **Gravity-Operated Efficiency:** Innovative aluminum blades open with airflow and close securely by gravity—no power needed.
- • **Seamless 4-Inch Integration:** Perfectly sized for versatile HVAC setups, ensuring a snug, leak-minimized fit.
- • **Dual Orientation Flexibility:** Engineered for both horizontal and vertical airflow, adapting effortlessly to your system needs.
- • **Robust Galvanized Steel Build:** Built to last with corrosion-resistant materials, rated for extreme temps from -20°F to 160°F.

## Overview

The FAMCO Backdraft Damper 4 Inch is a durable, galvanized steel damper designed for both intake and exhaust applications. Its aluminum blades operate smoothly with airflow and close by gravity, suitable for horizontal and vertical installations. Rated for temperatures from -20°F to 160°F, it features a foam seal to minimize air leakage, making it an energy-efficient choice for HVAC systems.

## Description

The FAMCO BD Butterfly Damper is used as a back draft damper for heat exchangers, exhaust systems, solar heating systems and other intake or exhaust applications where a powered damper is not needed. This damper works in both horizontal or vertical positions (upward airflow only) and the foam seal provides minimal air leakage. Due to its unique design and Aluminum blades, it opens easily with normal air flow and closes with gravity. Quality constructed in Galvanized Steel, gauges 28-22. Rated to -20 to 160 Degrees F.

## Features

- 4 inch
- Back-Draft Damper
- Horizontal & Vertical (See Spec Sheet)
- Intake or Exhaust

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | FAMCO |
| Style | basic |
| Vehicle Service Type | Bus, Truck, Van |
| Exterior Finish | Black |
| Material | Steel |
| Extended Length | 4 Inches |
| OEM Part Number | BD4 |
| UPC | 097665229006 |
| Manufacturer | FAMCO |
| Part Number | BD4 |
| Item Weight | 8 pounds |
| Package Dimensions | 8 x 8 x 8 inches |
| Item model number | BD4 |
| Is Discontinued By Manufacturer | No |
| Size | 4 Inch |
| Color | Galvanized |
| Item Package Quantity | 1 |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Brand:** FAMCO
- **Style:** basic
- **Vehicle Service Type:** Bus, Truck, Van
- **Exterior Finish:** Black
- **Material:** Steel

## Images

![Backdraft Damper 4 Inch - Image 1](https://m.media-amazon.com/images/I/71RRsQxqvUL.jpg)
![Backdraft Damper 4 Inch - Image 2](https://m.media-amazon.com/images/I/512YMs6gl2L.jpg)

## Available Options

This product comes in different **Size Name** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Hard to find size (5") and works great.
*by D***G on January 8, 2016*

Local home improvement stores carry only a small selection of mainstream sizes so it was nice to find the 5" diameter damper here. This was for use in a rental manufactured home where the built in damper was sticking open. This was a quick and easy fix to keep the cold air from rushing down into the kitchen. Is well made and I would buy this brand again if I need another one.

### ⭐⭐⭐⭐⭐ High Quality and Good Service
*by R***R on March 23, 2014*

I have purchased several of these dampers in 4 and 6 inch sizes. They work well in the horizontal position which is why I purchased them. Their dampers are of better quality than those I have purchased at Home Depot or Lowes.

### ⭐⭐⭐⭐⭐ Solid flapper. NOT a cheapo one like all others!
*by A***L on May 6, 2024*

This is the flapper you want if you want to last. All other flimsy flappers are weak as my wife's pinkie. Price could be a bit better.

## Frequently Bought Together

- Backdraft Damper 4 Inch
- AC Infinity Flexible 4-Inch Aluminum Ducting, Heavy-Duty Four-Layer Protection, 25-Feet Long for Heating Cooling Ventilation and Exhaust
- AC Infinity 6" Backdraft Damper, One-Way Airflow Ducting Insert with Spring-Loaded Folding Blades for 6” Ducting in Range Hoods and Bathrooms Fans

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**Shop now:** [https://www.desertcart.com.ar/products/27061860-backdraft-damper-4-inch](https://www.desertcart.com.ar/products/27061860-backdraft-damper-4-inch)

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*Product available on Desertcart Argentina*
*Store origin: AR*
*Last updated: 2026-05-27*