--- product_id: 35381986 title: "4-Inch CleanFlow HEPA Filter" brand: "growbright" price: "£63.94" currency: GBP in_stock: true reviews_count: 9 category: "Grow Bright" url: https://www.desertcart.co.uk/products/35381986-4-inch-cleanflow-hepa-filter store_origin: GB region: United Kingdom --- # 99.97% particle filtration @ 0.3 microns Compact 7.25" x 6.13" x 4" size Easy-install rubberized collar + steel clamp 4-Inch CleanFlow HEPA Filter **Brand:** growbright **Price:** £63.94 **Availability:** ✅ In Stock ## Summary > 🌬️ Elevate your air game with CleanFlow HEPA – because clean air means clear focus! ## Quick Answers - **What is this?** 4-Inch CleanFlow HEPA Filter by growbright - **How much does it cost?** £63.94 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/35381986-4-inch-cleanflow-hepa-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 - • **Optimized Airflow:** High-efficiency filtration without sacrificing airflow performance - • **Durable & Washable:** Reusable glass fiber filter extends lifespan with simple water cleaning - • **Effortless Installation:** Rubberized collar and steel clamp ensure a secure, no-fuss fit - • **Breathe Pure, Work Clear:** Blocks 99.97% of airborne particles for pristine air quality - • **Perfect Fit for 4" Ducts:** Designed specifically for 4-inch round duct/flange air intakes ## Overview The GrowBright 4-Inch CleanFlow HEPA Filter delivers industry-leading 99.97% filtration efficiency at 0.3 microns, ensuring superior air purity for your grow area or workspace. Its compact design fits standard 4-inch round ducts, while the rubberized collar and steel clamp guarantee a tight, easy installation. Built with durable glass fiber, this washable filter maintains optimal airflow and extends filter life, making it the smart choice for professionals who demand clean air and hassle-free maintenance. ## Description Improve air quality in the grow area with GrowBright CleanFlow HEPA Filters. GrowBright high efficiency particulate arrestance (HEPA) filters remove 99.97% of airborne particles at .3 micrometers. Highly efficient filtration with excellent airflow also makes GrowBright CleanFlow HEPA filters the most effective option for keeping expensive air-cooled lighting equipment clean and free of debris. CleanFlow HEPA filters install easily over rigid duct/flanging and secure tightly with a rubberized collar and steel clamps for a proper seal, and they can also be washed as needed for extended life. Simply remove and spray with a water hose to clean.Please Note: HEPA filters are recommended for use with high-velocity inline fan or blower fan units as they may create too much restriction for smaller fan types such as duct booster or small axial fans. ## Features - High-efficiency particulate arrestance (HEPA) filter for 4" round duct/flange air intakes - Blocks 99.97% of particles at .3 micrometers while providing excellent airflow - Features easy-install rubberized collar with steel clamp for a proper seal - Measures (max): 7.25" long x 6.125" diameter, 4" female flange ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01LXONLKE | | Air Filter Construction | Pleated | | Best Sellers Rank | #166,981 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #12,835 in Lawn Mower Parts | | Brand | GrowBright | | Brand Name | GrowBright | | Common Applications | Appliances, Residential | | Compatible Devices | Blower Fan, Inline Fan | | Customer Reviews | 4.5 out of 5 stars 60 Reviews | | Item Dimensions L x W x Thickness | 7.25"L x 6.13"W x 4"Th | | Item Weight | 3 Pounds | | MERV Rating | 13 | | Manufacturer | GrowBright | | Manufacturer Part Number | VNT-GB-HF04 | | Material | Glass Fiber | | Material Type | Glass Fiber | | Model Number | RM | | Number of Items | 1 | | Product Dimensions | 7.25"L x 6.13"W x 4"Th | | Product Grade | new | | Unit Count | 1.0 Count | ## Product Details - **Brand:** GrowBright - **Material:** Glass Fiber - **Product Dimensions:** 7.25"L x 6.13"W x 4"Th - **MERV Rating:** 13 - **Compatible Devices:** Blower Fan, Inline Fan - **Item Weight:** 3 Pounds - **Air Filter Construction:** Pleated - **Number of Items:** 1 - **Manufacturer:** GrowBright - **Product Grade:** new ## Images ![4-Inch CleanFlow HEPA Filter - Image 1](https://m.media-amazon.com/images/I/71t22+u5AwL.jpg) ![4-Inch CleanFlow HEPA Filter - Image 2](https://m.media-amazon.com/images/I/61OSINgMJYL.jpg) ![4-Inch CleanFlow HEPA Filter - Image 3](https://m.media-amazon.com/images/I/71XKB1EbDNL.jpg) ![4-Inch CleanFlow HEPA Filter - Image 4](https://m.media-amazon.com/images/I/716iUGwynhL.jpg) ![4-Inch CleanFlow HEPA Filter - Image 5](https://m.media-amazon.com/images/I/71okFjWE0wL.jpg) ## Questions & Answers **Q: This seller boarders on the ridiculous. how am i suppose to match an inline fan without knowing the cfm rating of this filter? lol** A: I have it on a 2 hundred and something fan and it does great **Q: At what cfm would this filter provide laminar flow? without this info the hepa rating is worthless.** A: These aren’t designed for that particular application and I am curious as well. I’ve wanted to use one to supply a clean space. I suppose with a speed controller it can be achieved. I don’t know how much it effects it but I would imagine a planar or flat type HEPA filter would be ideal as you’re never going to get air to emerge at a perfectly perpendicular direction from the membrane as the flow is restricted into a vent by design. You could get around it by modifying the area of the channel but by controlling the speed you have the best chance. It’s very heavy duty and performs beautifully for keeping a space clean. **Q: I'm not seeing a CFM rating (a rather important spec of a filter) ?** A: I run a 4” 190 cfm exhaust fan on a sealed unit where this is the only inlet for air. There is definitely a good suction in the tent which would tell me that the filter is rated much less than the 190cfm, however it works well paired with this size fan. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by K***S on March 19, 2023* ### ⭐⭐⭐⭐⭐ Review *by F***S on July 18, 2020* ### ⭐⭐⭐⭐⭐ Review *by R***O on May 19, 2022* --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/35381986-4-inch-cleanflow-hepa-filter](https://www.desertcart.co.uk/products/35381986-4-inch-cleanflow-hepa-filter) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-19*