---
product_id: 30857955
title: "Double Layer 4 Inch Duct Filter"
brand: "growbright"
price: "€ 16.31"
currency: EUR
in_stock: true
reviews_count: 8
category: "Grow Bright"
url: https://www.desertcart.de/products/30857955-double-layer-4-inch-duct-filter
store_origin: DE
region: Germany
---

# Dual-layer airflow optimization Universal 4-inch duct fit Activated carbon filtration Double Layer 4 Inch Duct Filter

**Brand:** growbright
**Price:** € 16.31
**Availability:** ✅ In Stock

## Summary

> 🌿 Elevate your grow space with cleaner air—because your plants deserve the best!

## Quick Answers

- **What is this?** Double Layer 4 Inch Duct Filter by growbright
- **How much does it cost?** € 16.31 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.de](https://www.desertcart.de/products/30857955-double-layer-4-inch-duct-filter)

## Best For

- growbright enthusiasts

## Why This Product

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

## Key Features

- • **Bug Off, Always:** Outer mesh screen blocks bugs and large debris before they enter your system.
- • **Activated Carbon Power:** Inner layer neutralizes odors and microscopic particulates for fresher air.
- • **Effortless Installation:** Fits standard 4-inch ducts with secure Velcro fasteners—no tools needed.
- • **Breathe Cleaner, Grow Stronger:** Dual-layer design traps dust, spores & pollen with minimal airflow loss.
- • **Built for Growers Who Demand Quality:** Keeps air-cooled reflectors and grow spaces contaminant-free, boosting plant health.

## Overview

The GrowBright Double Layer 4 Inch Duct Filter features a dual-layer design combining an outer bug screen and an inner activated-carbon filter to trap dust, spores, pollen, and odors. It fits standard 4-inch round ducts and installs easily with Velcro fasteners, ensuring minimal airflow restriction while improving air quality in grow areas and air-cooled reflectors.

## Description

Improve air quality in the grow area with GrowBright duct filters. Dual-layer design keeps contaminants out with minimal airflow restriction. The outer screen catches bugs and larger particles while the inner activated-carbon lined layer traps finer particulates such as dust, spores, and pollen. GrowBright duct filters are also great for keeping debris out of air-cooled reflectors. Filters install easily over duct/flanging and secure tightly with velcro fasteners.

Review: It work - Works like it says . No issues
Review: Good filter! - It seems to be a nice little filter.

## Features

- Dust & small particulate filter for 4" round duct/flange air intakes
- Low restriction dual-layer design
- Outer bug/larger-particle screen layer
- Inner activated-carbon-lined smaller-particulate layer
- Fits over standard 4" round ducting/duct flanging

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Best Sellers Rank | #312,170 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #2,517 in Lawn Mower Air Filters |
| Customer Reviews | 4.2 out of 5 stars 107 Reviews |

## Images

![Double Layer 4 Inch Duct Filter - Image 1](https://m.media-amazon.com/images/I/61LRKUfrrxL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ It work
*by S***P on May 16, 2025*

Works like it says . No issues

### ⭐⭐⭐⭐⭐ Good filter!
*by R***. on September 21, 2019*

It seems to be a nice little filter.

### ⭐⭐⭐ Works well
*by C***S on April 27, 2022*

Perfect for extra protection and easy to use great product

## Frequently Bought Together

- GrowBright Double Layer 4 Inch Duct Filter
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**Shop now:** [https://www.desertcart.de/products/30857955-double-layer-4-inch-duct-filter](https://www.desertcart.de/products/30857955-double-layer-4-inch-duct-filter)

---

*Product available on Desertcart Germany*
*Store origin: DE*
*Last updated: 2026-02-25*