Changing the filters today on one of our #CorsiRosenthalBox es.

Spot the difference.

Putting them side by side and realising that all the gunk in the filter is not in our lungs never gets old.

#CleanTheAirWeShare

During #bced #ParentTeacherNight , parents will visit my #science class & notice my #corsirosenthalbox ...1/

I built a spreadsheet to calculate the operating point of a combination of filters and fans in a #corsirosenthalbox . The Link is a few tweets down in the thread. It might have inappropriate extrapolations or other errors, but I hope it will help designers configure boxes. 1/🧵

This #corsirosenthalbox has been running in my kids' bedroom for 10 months. Time for a filter replacement.

Want all that in your lungs?

If you don't think it's that big of a deal ...

Finally got a #CorsiRosenthalBox together... Lookin and workin great! Definitely recommend building one of these - costs about $100-$150 CAD for materials, and about 30 mins to build. 🌬️
#DIY #HEPA
encycla.com/Corsi-Rosentha…

Just finished a busy month of indoor air filtration workshops around the dusty Salton Sea, helping participants build their own #CorsiRosenthalBox . The workshops themselves gave us a good opportunity to evaluate the filters, and the data are pretty clear: these things work!

Thrilled to mark another Klinair milestone with 10 more #CorsiRosenthalBox es delivered to SMPN 16 Junior High in Jakarta! We had a great day discussing the perils of indoor air pollution with the staff and students there. Here's to cleaner air and brighter futures!

Another Week, Another Delivery!

This time, components for SIX #CorsiRosenthalBox es are making their way to their new homes in #NI & beyond.

Watch this space to see where go.

They’ll be trapping viruses, bacteria, dust, mould and PM2.5

#CleanTheAirWeShare

NEW: the North Box 6XL is the 5X's beefier cousin. 6 Arctic P14 fans and 2 x 3M filters, est. CADR 290 cfm. A tapeless design using tension cords and a slotted filter holder to keep it all together. I'll have it up for pre-orders soon!

#CorsiRosenthalBox #CovidIsAirborne

Delighted to be doing the #CorsiRosenthalBox build for a church community in #NorthBelfast at Belfast City Vineyard, Cavehill.

Well done to the church leadership who decided to help improve the #IndoorAirQualify of the building where they meet.

#CleanTheAirWeShare

Thanks to some great advice I now have a very sturdy 9-fan array for my 9-for-4 prototype!

#CovidIsAirborne #CorsiRosenthalBox #AirPurifier

Now taking pre-orders to help fund the first batch of the NorthBox 6XL. CADR 290cfm! Tapeless design is easy to build with faster filter changes. Kits begin at $220

aidankepo.wixsite.com/northboxsystems

#CorsiRosenthalBox #COVIDIsAirborne #WildfireSmoke

Next-Gen #corsirosenthalbox is here!

💨 Quieter!!
💨 Faster to build
💨 Simpler to build
💨 Still low-cost
💨 Small floor space
💨 Longer cord
💨 Only one simple connection
💨 Still highly effective & efficient

Here's how I built a new version with modular PC fans:

Help a Bronx elementary school add PC fan #corsirosenthalbox air purifiers to classrooms! The 5th grade Environmental Stewardship Club students will lead the preK-2 students in building them, bolstering both clean indoor air & science skills. Donate: donorschoose.org/project/help-u…

I finally found time over March Break to make the PC fan-based #CorsiRosenthalBox . I used 8 PC fans with 3D-printed fan grills/mounts (4 on each side) and four 3M filters. This version removed particulate matter from cooking in less than 15 minutes.

We had a #bced staff mtg today and someone (not me) made sure that a door was opened for #ventilation & the student-made #corsirosenthalbox ,'Gerald. our biggest fan' ,was turned on. CO2 levels were decent. A few staff in KN95s & N95

New filters (Merv 14!), who’s dis? #CorsiRosenthalBox #CRB #CleanAir

Working on this one-off 9 x 140mm fan monster that will use four 20x20x2' filters. Maybe something I'll make available if it works as well as I'm hoping.

#corsirosenthalbox #CovidIsAirborne #IndoorAirQuality

There are a lot of viruses going around right now. These air purifiers are super easy to make and really effective at cleaning the air! Add one to your home, office or school if you can! Add giant eyeballs to make it cute! #cleantheair #CorsiRosenthalBox

Our North Box 5X air purifiers come in Goth and Hippy style.

aidankepo.wixsite.com/northboxsystems

#CovidIsAirborne #IndoorAirQuality #corsirosenthalbox