This seller boarders on the ridiculous. how am i suppose to match an inline fan without knowing the cfm rating of this filter? lol

I have it on a 2 hundred and something fan and it does great

At what cfm would this filter provide laminar flow? without this info the hepa rating is worthless.

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.

I'm not seeing a CFM rating (a rather important spec of a filter) ?

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.

4 Inch Cleanflow Hepa Filter | Desertcart British Virgin Islands

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Sold byAmazon British Virgin IslandsDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛠️ Elevate your air game — clean, clear, and effortlessly cool!

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 every time.
UNRIVALED PURITY SHIELD - Blocks 99.97% of microscopic particles for pristine air quality.
BREATHE EASY FLOW FREELY - Engineered for maximum airflow without compromising filtration power.
PERFECT FIT FOR PRO SETUPS - Designed for 4-inch round ducts, ideal for high-velocity inline or blower fans.

The GrowBright 4-Inch CleanFlow HEPA Filter delivers professional-grade air purification by blocking 99.97% of particles down to 0.3 micrometers while maintaining excellent airflow. Its durable glass fiber pleated design fits 4-inch round ducts with a secure rubberized collar and steel clamp for easy installation and a tight seal. Washable and reusable, it’s optimized for high-velocity inline or blower fans, making it the go-to choice for maintaining clean air in grow rooms and advanced HVAC setups.

Specifications

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

Reviews

K**S

19.03.2023

F**S

18.07.2020

R**O

19.05.2022

M**Y

8.12.2023

A**R

24.02.2018

M**L

24.08.2025

I**D

12.03.2020

J**R

7.11.2024

I**H

12.12.2024

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