eed new filters for your Corsi-Rosenthal box? 💨 Donate A Mask has a 12-pack of Replacement MERV-13 Filters - AAF Flanders on sale for $299.99.

Get ready for #WildfireSmoke. Pick up a 12-pack today! Sale ends May 23. ⏰

🛍 https://buymask.ca/collections/wildfire-smoke-protection

#Ready4Smoke #MERV13 #CRBox #CanadianWildfire #WildfireSeason #AirQuality #CleanAir

Pro tip with Canada fires if you're in a safe place but still get smoke from them: if you don't have a furnace that can accept MERV13 filters, you can duct tape one to the front of a box fan if the area to filter is small enough, or do the full four-filter special known as the Corsi-Rosenthal box that became popular for Sars-CoV-2 and wildfire smoke that my one-filter Redneck Edition was inspired by.
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#WildfireSmoke #DontBreatheThis #wildfires #AirFilters #Merv13

Here's the 20" #CorsiRosenthalBox I'm working on. Fans in rectangular housings basically don't exist in the UK, so I made a cardboard shim out of the box for this circular one.

This build was a proof of concept (hence the green masking tape rather than duct tape, and the plastic sheeting still on the #MERV13 filter boards). I was testing whether the shim and the boards would support the weight of the fan. Despite being a mock up it's surprisingly rigid!

Next stage involves building it properly (including sealing those gaps at the corners; the 20" fan is actually more like 21.5" across and the boards are 19.5"), then using my anemometer to measure the flow rate of the finished box, so I can work out what size room it can filter. I'm intending this one for a local community centre where a Queer Club meets, to make their meetings safer.

#CovidIsNotOver #CleanAir #CorsiRosenthal

If you or someone you know is looking into different air purifiers, this is a great video:

https://youtu.be/Mzip-NfdRT8?si=c0AwTRJfL4d3_kb0

#CovidIsNotOver #covid19 #LongCOVID #MaskUpN95 #CleanTheAir #HEPA #PCFans #MERV13 #AirPurifier

Health Canada has a
consultation on Safe Long Term Care.

@O_S_P_E recommendations:
1. Comply with ASHRAE 241
2. Comply with CSA Z317.2
3. Upgrade to MERV-13
4. Implement upper room UV
5. Avoid alternative methods
6. Transparency & CO2
7. Proper PPE

PDF versions with references here: https://ospe.on.ca/advocacy/our-work/submissions/

You can submit your comments for the next two days here: https://canada.ca/en/health-canada/programs/consultation-safe-long-term-care.html

#LongTermCare #HealthCanada #Consultation #CO2Monitor #MERV13 #ProperPPE #ASHRAE241 #CSAZ3172