CORSI-ROSENTHAL BOX

know better, breathe better

Make your own air cleaner

CADR that matters

The Corsi-Rosenthal Box is an innovative, open-source air purifier design that has become a symbol of grassroots innovation. The CR Box is not just a product but a movement that has shaped our company’s mission and vision.

DO-IT-YOURSELF DIY AIR PURIFIER

An air purifier is simply a combination of a fan attached to one or more filters. The Corsi-Rosenthal Box or CR Box is an affordable, effective do-it-yourself (DIY) air cleaner that was originally created as a single filter fan unit to combat wildfire smoke, but has since exploded in popularity due to its effectiveness against COVID-19, smoke particles, dust, and all kinds of pollutants that contribute to poor indoor air quality (IAQ).

Duct tape, fan and MERV 13 filters make up a CR box

OUR BLOG ON THE CORSI ROSENTHAL BOX

How To 3D Print An Air Purifier

The article offers a cost-effective and efficient solution for air purification with a step-by-step guide on building an open-source and 3D printable air purifier. It also explains the benefits of using air purifiers in reducing the risk of respiratory infections.

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Endorsed by/Notable mentions

The CR Box has made its way around.

FROM A PROJECT TO A PRODUCT

We are a social startup aiming to manufacture a low-cost, high-performance air purifier inspired by the Corsi-Rosenthal Box. Our journey began once we started making our CR boxes and wondered why there wasn't a comparable product available on the market. Check out our blog post that describes, the people, events, and movement that have shaped our company.

PREPARING FOR WILDFIRE SMOKE

Your first line of defense against wildfire smoke is staying in the know. Reliable sources such as local news, weather apps, or dedicated websites offer real-time updates on wildfires and air quality indexes. This critical information allows you to plan your activities and adjust your daily routines when smoke reaches hazardous levels.

Want to understand the Air Quality Index better? Check out our blog post with downloadable PDFs and charts.