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r/crboxes is a subreddit with 6k members. Its distinguishing qualities are that the community is medium in size.
CR boxes are DIY (or buy) air purifiers that are much more efficient, affordable, and quiet than standard air purifiers. Show off your CR boxes, share tips on building them, and help reduce the transmission of Airborne diseases to end the ongoing Covid/SARS2 Pandemic.
CR boxes stands for: Corsi-Rosenthal boxes
CADR stands for: Clean Air Delivery Rate
CFM stands for: Cubic Feet per Minute. Also referred to as airflow, the CFM is how much air a fan moves.
Learn more at https://itsairborne.com
Popular Themes in r/crboxes
#1
Solution Requests
: "Using Corsi-Boxes to prevent spread of canine respiratory viruses"
8 posts
#2
Advice Requests
: "Why do some say cr boxes are better than store bought air purifiers?"
3 posts
#3
Money Talk
: "4-SickleFlow taped Brisk Box kit - 200 cfm for $99"
2 posts
#4
Pain & Anger
: "Wild fires starting up again.."
1 post
Popular Topics in r/crboxes
#1
Fan
: "5 filter box, bottom Fan & UV - just had the idea to throw it together, curious what people think?"
28 posts
#2
Cr Box
: "Experience of designing Cr Box"
25 posts
#3
Filters
: "Built my 2nd 3D Handyman CR box fan filter w/ 20” Air King fan + 4 3M 20x30x1 MERV 14 MPR 2500 Filters"
21 posts
#4
Crbox
: "Crbox after 2 months of use!"
16 posts
#5
Filter
: "5 Filter box, bottom fan & UV - just had the idea to throw it together, curious what people think?"
15 posts
#6
Box Fan
: "Built my 2nd 3D Handyman CR Box Fan filter w/ 20” Air King fan + 4 3M 20x30x1 MERV 14 MPR 2500 filters"
15 posts
#7
Box
: "Feedback on Box requested"
13 posts
#8
Air
11 posts
#9
Build
: "Made my first CR Box today! "
11 posts
#10
Fans
: "Are PC Fans enough for air filtration?"
10 posts
Member Growth in r/crboxes
Yearly
+3k members(138.0%)
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