I have created a step-by-step guide to building a
#CorsiRosenthalBox
. Thank you
@JimRosenthal4
&
@CorsIAQ
for approving it. Displaying it in waiting rooms, offices, schools, and libraries will help more people stay safe this season. Please DM me if you need a PDF or another size.
14 y/o aspiring engineer offering my time to create Corsi-Rosenthal boxes in any configuration for anyone in Mississauga. Will buy materials, assemble, and deliver. CR box filters viruses to stop the spread of COVID-19.
#COVID19
#Omicron
#corsirosenthalbox
#Mississauga
I thought last night was very special as I made my 100th
#CorsiRosenthalBox
. This evening, I am humbled, honoured, and inspired by the kind words of encouragement.
Thank you to: 1/4
After saving for the last few years, I was able to upgrade my 3D printer. I can now print these
@AranetIoT
cases in less than 2 hours. Please let me know if anyone needs them
I finally completed the step-by-step instructions for building a Mini Corsi-Rosenthal Box. Please let me know if you need it translated or adapted for materials available in your country. The PDF is available here:
#CorsiRosenthalBox
A
#CorsiRosenthalBox
can also help with poor indoor air quality due to
#wildfires
. Here are the instructions (in English and French) to build one and protect yourself from the harmful effects of PM2.5. If you live in the GTA, I can build one for you at cost.
It was an honour to receive the Young Leader COVID-19 Influencers Award
@socmed4good
from the Acting Mayor of Mississauga
@Chris_Fonseca3
. I also received a certificate from the office of Mayor
@BonnieCrombie
. There is now a Mini
#CorsiRosenthalbox
at Mississauga City Hall!
Huge thanks to
@JimRosenthal4
for sending me frame edges to make four 10 x 10 filters by cutting one 20 x 20
@3M
Filtrete MPR 1900 filter. I also found fans in the US at a great price. I can now make Mini
#CorsiRosenthalBoxes
for $43 CAD (3M filters) or $30 CAD (MERV 13 filters).
Thanks to a thoughtful tip from
@DavidElfstrom
on clearance box fans from Walmart and a generous discount on MERV 13 filters from United Filters in Mississauga, I have been able to reduce the cost of a 4-filter
#CorsiRosenthalBox
to $54. 1/2
I am very lucky to have the most enthusiastic helpers who love building a
#CorsiRosenthalBox
These boxes can keep you safe from airborne viral particles and are easy to make. If you haven't made one yet, make it now! Or I can make one for you.
@CorsIAQ
@JimRosenthal4
On Friday, I had the honour of presenting to the grade 7 & 8 students at
@RBPSBobcats
about the importance of clean indoor air and how easy it is to make a
#CorsiRosenthalBox
for their home or school. I hope I inspired them to make a box!
Finally finished my AP exams, and found some time to make a mini-mini
#CorsiRosenthalBox
for cars using
@JimRosenthal4
's instructions. These cost $65 with
@3M
filters and $52 with MERV 13 1-inch filters. I am trying to find ways to reduce the cost even further.
March 15, 2020 - It was my 13th birthday, and I was disappointed that we had to cancel a much-anticipated family vacation to Japan. 3 years later, I still haven't been to Japan, but I'm excited because it won't be too long before I can deliver
#CorsiRosenthalBoxes
myself!
@AranetIoT
@soveryart
The cost of the case is around $2 CAD. You can pick it up in Mississauga. If you need it mailed within Canada, I will have to find out the postage.
Mailing in the United States costs around $5-$6 USD. My grandparents can do it when they visit in a few weeks.
I can make the MINI
#CorsiRosenthalBox
for $56 (3M) or $45 (2" MERV 13). Thanks to
@JimRosenthal4
, who has offered to send me frame edges so I can make smaller filters by cutting 20x20 filters. Please DM me if you need a Mini CR Box. This way, I can request enough frame edges.
Thanks to everyone's suggestions, I created a design with a loop to attach a carabiner or a cord. Trying to ship out the first batch by Tuesday! I also want to thank
@TRyanGregory
for the original design!
For my Grade 10 Visual Arts culminating task we had to use plaster to create a mask and incorporate it into a social issue. I presented a future where people would have to wear masks outdoors because of poor air quality. That future was much closer than I imagined...
Finally,
@SharkawyMD
, for keeping me very busy since December - I thought I would make a few boxes for Mississauga residents, but I have sent boxes as far as Ottawa!! (thank you,
@Kapur_AK
!) Seeing a community come together has been life-changing for me. I am truly grateful. 4/4
@DavidElfstrom
,
@joeyfox85
,
@LadyScorcher
,
@KashPrime
, and many more for including me in the movement to clean the air in indoor spaces.
And everyone who trusted me to make their boxes and gave me extra money that I used to donate boxes to those in need. 3/4
As library recipients from our Canadian CO2 Monitor Expansion program add CO2 monitors to their collections,
@ShivenTaneja
is following along to cover their launches, community reception, and more!
First up: an interview with Phase 1 recipient
@_OCL
/1
@wendykloiber
I have created a document called "CO2 monitors and Corsi-Rosenthal Box Instructions." There is a section on how air filtration can help and why a CR Box is useful. You will find it here: . I am happy to change it to meet your requirements.
@SharkawyMD
Thank you Dr. Sharkawy for all your support and encouragement! I am inspired by you,
@kprather88
,
@CorsIAQ
,
@JimRosenthal4
, and so many others on this platform working tirelessly to keep us all safe.
Last day of summer school! Just a reminder that I am still making
#CorsiRosenthalBoxes
for anyone who needs them. I also replace filters for boxes older than 6 months and repair boxes chewed by untrained puppies!
I’m deeply honoured and humbled to announce that I’m receiving a
@DianaAward
today. Watch the
#2023DianaAwards
virtual ceremony to support me and other young visionaries and leaders today at 15:00 BST. Get your free ticket:
The cost of each item (excluding tax) is:
Walmart fan: $14.00
Lasko fan: $36.98
4 Filtrete filters: $92.60
4 Merv 13 filters: $33.80
You can mix and match the filters with fans. Just let me know which one you want, and I can make it! 2/2
I am honoured to join a wonderful team! Thank you for this incredible opportunity to showcase the important work CAVI is doing for communities across Canada.
CAVI - Community Access to Ventilation Information
CAVI is very proud and honoured to welcome
@ShivenTaneja
to the team! Shiven likely needs no introduction for many of you, but if you are not familiar with his impressive accomplishments, he has kicked off CAVI's new blog with an intro to himself. 1/2
Words can't express my gratitude to the
@3M
team. It was an amazing experience to meet your inspirational scientists & engineers and learn about your innovative products and technologies. I will never forget this day, even though I still can't believe that it actually happened!
Who guessed it right? 🧐 Honored to host citizen scientist
@ShivenTaneja
at 3M HQ today! Shiven has been helping provide clean indoor air by building
#CorsiRosenthalBoxes
. 3M is proud of Shiven for his selfless work. Check back here as we share his fun-packed day at 3M!
NEW! I have added a version in German and adapted it for materials available in Germany. Find all the versions here: .
Thank you to
@BlueDotFan
for requesting it and providing guidance.
DM me if you need this handout adapted for any other country.
Thanks to the incredible generosity of those who sent me extra money and asked me to pay it forward, I have two more
@3M
@Filtrete
Corsi-Rosenthal Boxes to give away. Please DM me if you know someone in the GTA who needs a box but cannot afford it.
#corsirosenthalbox
My first movie in 2.5 years. I was dragged along to see
@WarnerBrosCA
Elvis and I really enjoyed it! However, the ventilation at
@TIFF_NET
was terrible, so I made sure my N95 stayed on.
My grandparents are driving to Pittsburgh (back in Mississauga on Nov 30). They are bringing back children's Tylenol/Advil/Motrin (at cost) for many families in their building. They are happy to bring more for anyone who needs it. Please DM me if you need some.
Read about the launch of Prince Edward County Public Library's CO2 monitor lending program here 👇.
If your library does not offer CO2 monitors, you can ask them to contact
@CAVI_CO2
.
CAVI - Community Access to Ventilation Information
Our next CAVI blog instalment from
@ShivenTaneja
features Prince Edward County Public Library’s CO2 monitor loaning program!
See how this Ontario library system is bringing indoor air quality literacy to their community below ⬇️
@PECOntario
Incredibly grateful to the team at for their guidance and mentorship during my internship this summer. It was exciting to see that their cutting-edge ALVI filters enhanced the performance of the
#CorsiRosenthalBox
!
@joeolivermd
Hi Dr. Oliver,
I know Canadian Tire increased their price for the box fan. I now purchase them from Bed Bath and Beyond ($34.99 + 20% coupon) or Home Depot ($36.98). I purchase the MERV 13 filters at a discount from United Filters in Mississauga ($10/filter)
I know this isn't about air filtration, but I wanted to share the inspiring story of a family friend
@NiamJainArtist
. Niam's victory will help create a more inclusive environment for Canadians who face discrimination because of disabilities.
My grandmother sent me this 2015 article in which she shares her views on air pollution. She may not have thought air filters or masks were necessary back then, but she definitely does now! Also quoted is
@joshapte
@ShivenTaneja
made this beautiful corsi-rosenthal box. It's for my classroom and it is extremely effective for filtering air to make our students safe from airborne viruses. It's a cheap dyi project (100$ or less).
Thanks to a generous contribution from my school's guidance department
@Mentor_TEAM
, I have another
#CorsiRosenthalBox
to give away. Please send me a message if you or someone you know needs one.
#COVIDisAirborne
@suze_q2
Thanks to
@DavidElfstrom
, I bought discounted box fans from Walmart. I will post an updated price list as soon as they arrive. I should be able to get the price of a CR box with 4 MERV-13 filters down to $55.
@LouisPDemocrat
@jeffgilchrist
The best price for 3M Filtrete MPR 1900 filters is at Canadian Tire. They sell a 2-pack. I buy MERV 13 filters at United Filters (). They offer a 4-pack, but their 12-pack has the best value.
1/ Many thanks to
@SactownMagazine
, Ryan Miller for the story and Josh Wool for the portraits. Great to see
@JimRosenthal4
featured as well. Thanks to the thousands who and just doing it!
@johne_erhardt
@CorsIAQ
@JimRosenthal4
It is difficult to orient the fan upwards because the Comfort Zone fan has legs that cannot sit on the filter. I will create another set of instructions for the Black and Decker 9-inch fan, which I think can be placed facing up.
Important! Get the most out of your
#boxfanfilter
with a shroud on the outlet. Improves inlet flow & reduces power and noise. I've found optimum size for two models. Same final flow.
Utilitech/Hurricane: 13.5" dia, +47% flow
Lasko Comfort: 15" dia, +38% flow
@EatKS
@CorsIAQ
Thank you for your kind offer. I will let you know once I set something up. I want to make sure the boxes go to those who are unable to afford it.