tutorial

How to Build a Corsi-Rosenthal Box in 30 Minutes

By DIY Air Team • 8 min read • 2025-09-15

Learn to build the famous Corsi-Rosenthal Box air purifier with this comprehensive step-by-step guide. Perfect for beginners!

The Corsi-Rosenthal Box has become one of the most popular DIY air purifiers worldwide. This guide will walk you through building your own in just 30 minutes...

Step-by-Step Guide

  1. Gather materials: box fan, 4-5 MERV 13 filters, tape
  2. Arrange filters in cube shape
  3. Secure with duct tape
  4. Attach box fan on top
  5. Test and enjoy clean air

Ready to Build Your Air Purifier?

Get Started