Corsi-Rosenthal Foundation (US)

These folks know how to decorate!

🥹Look at our elders keeping their community healthy🥹

This is Air Alliance Houston building CR Boxes.

If you are inspired by these folks, please donate so we can sponsor more events like this: givebutter.com/buildabox2025

Is your air cleaner a money suck?
⬆️up front cost
⬆️cost of replacement filters

The CR box is a fraction of the cost of other units, with greater efficacy.

It just moves SO much air, providing mixing and many more passes through the filters.

Can your air cleaner do this?⤵️

Please post a photo of your Corsi-Rosenthal Box if you are decorating one or more for Halloween.

@crfoundationus.bsky.social

Please help out the Corsi-Rosenthal Foundation, it's already done so much good in the world!!

Please consider donating. As we know this is an indoor pandemic and to give our kids the best chance is to clean the air in the schools using air filters if their IAQ is subpar(which most are 🥺) I have built countless Corsi boxes over these past 5 yrs and they have kept us safer! #CleanTheAirWeShare

Check out these adorable CR box earrings made by an 8yo.

Such creativity.

The young ones continue to inspire us, and motivate us to do better to protect them.

Build a Box Campaign Help Us Bring Clean Air to More Classrooms

Many of you have been with us from the beginning, as champions for clean air.

We have put thousands of CR boxes into schools & community spaces across the country.

Help us continue the movement making clean air accessible to all by donating today:

givebutter.com/buildabox2025

This week's top fan is a soon-to-be Eagle Scout who has decided to do his big Eagle Project on building and donating CR Boxes to a local school with data showing poor indoor air quality.

The youth are fired up about IAQ.
And we are here for it!

directions for filtering indoor air

Sadiq Khan on X: "Cleaner air is coming to London’s classrooms. St Mary’s Primary is one of the first to get air filters funded by City Hall - 200+ more schools will follow soon ⬇️ https://t.co/vIG47FK6Ts" / X Cleaner air is coming to London’s classrooms. St Mary’s Primary is one of the first to get air filters funded by City Hall - 200+ more schools will follow soon ⬇️ https://t.co/vIG47FK6Ts

Hope this is the start of many more schools (*+ daycares) using air filters, in UK + beyond. One option: @crfoundationus.bsky.social filters are inexpensive and EFFECTIVE. We need to protect children + those who care for them. This works.

@mark-carney.bsky.social

x.com/SadiqKhan/st...

Research says ...
CR boxes are:
- effective
- quiet
- durable
- easy to move
- not a distraction to teachers or students

If you want to get CR Boxes into your classroom, the CR Foundation can give you all the supplies ... for FREE.
Apply for a grant today: corsirosenthalfoundation.org/apply/

Apply - Corsi-Rosenthal Foundation Dedicated to providing cleaner safer air for all.

You can access these charts on our website, here: corsirosenthalfoundation.org/apply/

Click on Step 1: Identify the need for Corsi-Rosenthal Boxes and you'll see the same charts.

(as always, not medical advice. Chart estimates ceiling height of 9ft.)

How many CR Boxes do you need for a particular space?

Check out our new handy charts to help gauge your needs for:
- school settings
- residential settings

*Notice the guidance is different based on your goals:
- mitigating wildfire smoke
- mitigating bioaerosols

We are looking forward to participating in this Global IAQ event next week at UN Headquarters in NYC.

We will be joining orgs from around the world to address the need for clean indoor air.

Register here 🔽 to watch the event from anywhere:
bit.ly/461pNPq

DIY Air Purifier Assembly to Support Gordon Parks Elementary Academy Wichita Motivated to help one of Wichita’s most environmentally impacted neighborhoods, Safe Streets Wichita is assembling a coalition of community members, partners and local advocates to help build DIY air ...

“By coming together to build these purifiers, neighbors are taking a meaningful step toward ensuring that children and educators have a safer, cleaner place to learn and grow.”

Read how Safe Streets Wichita used our grant process to build CR boxes. www.communityvoiceks.com/2025/08/01/d...

🥳The Corsi-Rosenthal Foundation is celebrating the donation of our 2,000th CR Box.🥳

That is A LOT of clean air ... all thanks to your generous donations that allow us to do this work.

Thank you! Feel free to join our efforts by donating here: corsirosenthalfoundation.org/donate/

Red Rock GATE Project:  Corsi-Resenthal Air Purifier Boxes Avra Valley Fire District has recently hosted the GATE students from Red Rock Elementary School to build and install Corsi-Rosenthal air purifiers at…

Check out these amazing kids teaching
🔥🚒🧑‍🚒fire fighters🔥🚒🧑‍🚒
how to make a Corsi-Rosenthal Box to clean their indoor air.

Fire fighters are exposed to horrendous amounts of particulate matter.

The students captured 102 pgs of data to analyze!

www.avfire.org/red-rock-gat...

💥NEW RESOURCE💥

We're excited to share a new BIG BUILD GUIDE to help those who are building a large quantity of CR Boxes.

It's an amazing combination of:
- tips
- printable instructions
- editable files

Check it out: corsirosenthalfoundation.org/instructions/

Thanks @usepa.bsky.social
for including us in the team of Air Cleaning Allies super heroes!

Check out their new Activity Book for kids to learn about the importance of clean indoor air and ways to improve IAQ.

Give DJ a ❤️!!

Download it here: www.epa.gov/system/files...

Want to get [FREE] Corsi-Rosenthal Boxes in your child's school this year?

We've created an email you can share with the school principal to make the process easier.

You can access it through the link on STEP 2 of our grant process. corsirosenthalfoundation.org/apply/

Please share!

Donate - Corsi-Rosenthal Foundation Dedicated to providing cleaner safer air for all.

We always welcome donations to help us continue to fund more projects to contend with wildfire smoke.
corsirosenthalfoundation.org/donate/

Local volunteer groups build air purifiers for students living near 29th and Grove contamination The air we breathe is what keeps us alive. But when that air is contaminated, it can and will harm us instead. By building air purifiers for a local school,

Inspired by our friends in Kansas who are doing amazing work to get clean air in classrooms in Wichita.

Grateful to be able to do our part to contribute all the supplies.

Check out this news story about their project: www.kake.com/community/lo...

Tune in to this 11-minute interview with Dr. Richard Corsi on Canadian radio.

How a DIY air purifier can help deal with wildfire smoke.
@corsiaq.bsky.social

Affordability - Accessibility - Efficiency
They continue to be our driving values.

www.cbc.ca/listen/live-...
Pic of the OG.

This week's update: 12 CR boxes granted to heat relief and respite centers in the Phoenix, AZ area. @airsupportproject.bsky.social

Back-to-school season is upon us. Be sure you are following us to get updates on all our new resources to help kids and teachers have cleaner air this school year.

This week's Top Fan is our friends at
@airsupportproject.bsky.social . Their VP, Melissa Smallwood, built CR boxes to be placed in heat relief centers around Phoenix, AZ.
These cooling & respite centers ease one public health crisis. Happy to minimize the impacts of other crises.

This week's update: 12 more CR Boxes deployed to schools and community centers around the US.

We are working hard to get ready for back-to-school season! Please consider donating $$ so we can get clean air in as many classrooms as possible. Donate here: corsirosenthalfoundation.org/donate/

This week's Top Fan!!

The Ohio Clean Air Coalition recently received a grant from us. They gathered, built, and distributed several CR boxes to public spaces in their community!

We are honored to have played a small part in this story.

Another great week of helping folks access cleaner indoor air.

Be sure to follow us and RT.

We've got A LOT of new resources to share in preparation for back-to-school season.
@corsiaq.bsky.social @polsiewski.bsky.social @jimrosenthal5.bsky.social @jaydocovid.bsky.social @jehnml.bsky.social

Drop a 👋 below to say hi to Liesl McConchie (@Liesl4CleanAir.bluesky.social), our new interim Executive Director for the Corsi-Rosenthal Foundation.
We are thrilled to have Liesl's energy and expertise on board as we deliver cleaner air to improve human health.