Large PC fan CR Boxes can save a couple hundred dollars per year in electricity and filter replacement cost compared to equivalent large HEPAs
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189-415 CADR - 5-9 fans
Luggables
Luggables
NOTE: Only blue-fan variants have colored fans.
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Luggables
Luggables are our lightweight, portable, and cost-effective CR Boxes for medium-large rooms. This 16x26x7" Luggable boasts 5 premium SickleFlow fans, a great fit for medium-large rooms like open kitchen/family, classrooms, conference rooms etc. It's well-oriented: the main 5-fan bank can blow up or sideways, with one side against a wall. Finally, it really is luggable -- weighing only 6 lbs! Luggable comes with a side suitcase handle installed.
The optional hex mesh filter guard protects from prying little hands and claws.
Unassembled Kit has 30 minute assembly time.
Considering shipping prices, unassembled STEM Kit w/o filters can save ~$50 when 3M Filtrete MPR1900/MPR2200 16x25 are purchased separately fromCostco,Lowes, Amazon. Outside the US, try Digi-Key
While working toward UL507 certification to satisfy CARB air cleaner regulations, only unassembled kits without filters will ship to California.
Luggable hardboard panels do not contain lead, Formaldehyde, or PFAS. However, like cooking, lasercutting can generate trace carcinogens hence:
⚠️WARNING: This product may contain chemicals known to the State of California to cause cancer. www.P65Warnings.ca.gov for more information
Luggables are our lightweight, portable, and cost-effective CR Boxes for medium-large rooms. This 16x26x7" Luggable boasts 5 premium SickleFlow fans, a great fit for medium-large rooms like open kitchen/family, classrooms, conference rooms etc. It's well-oriented: the 5-fan bank can blow up or sideways, with one side against a wall. Finally, it really is luggable -- weighing only 6 lbs! Luggable comes with a side suitcase handle installed.
The optional hex mesh filter guard protects from prying little hands and claws.
Unassembled Kit has 30 minute assembly time.
Considering shipping prices, unassembled STEM Kit w/o filters can save ~$50 when 3M Filtrete MPR1900/MPR2200 16x25 are purchased separately fromCostco,Lowes, Amazon. Outside the US, try Digi-Key
While working toward UL507 certification to satisfy CARB air cleaner regulations, only unassembled kits without filters will ship to California.
Luggable hardboard panels do not contain lead, Formaldehyde, or PFAS. However, like cooking, lasercutting can generate trace carcinogens hence:
⚠️WARNING: This product may contain chemicals known to the State of California to cause cancer. www.P65Warnings.ca.gov for more information
Luggables are our lightweight, portable, and cost-effective CR Boxes for medium-large rooms. This 16x26x7" Luggable boasts 5 premium SickleFlow fans: 3 blue and 2 black, bringing cool color to medium-large rooms like restaurants, clubs, open kitchen/family, and classrooms. It's well-oriented: the 5-fan bank can blow up or sideways, with one side against a wall. Finally, it really is luggable -- weighing only 6 lbs! Luggable comes with a side suitcase handle installed.
Note the blue lights will always be on when the fans are powered, and are too bright for bedrooms, but make a nice nightlight elsewhere in the house. The blue lights use 4.4W more than a basic 5-black SickleFlow.
The optional hex mesh filter guard protects from prying little hands and claws.
Unassembled Kit has 30 minute assembly time.
Considering shipping prices, unassembled STEM Kit w/o filters can save ~$50 when 3M Filtrete MPR1900/MPR2200 16x25 are purchased separately fromCostco,Lowes, Amazon. Outside the US, try Digi-Key
While working toward UL507 certification to satisfy CARB air cleaner regulations, only unassembled kits without filters will ship to California.
Luggable hardboard panels do not contain lead, Formaldehyde, or PFAS. However, like cooking, lasercutting can generate trace carcinogens hence:
⚠️WARNING: This product may contain chemicals known to the State of California to cause cancer. www.P65Warnings.ca.gov for more information
Luggables are our lightweight, portable, and cost-effective CR Boxes for medium-large rooms. This 16x26x7" Luggable boasts 5 premium SickleFlow fans: 3 blue and 2 black, bringing cool color to medium-large rooms like restaurants, clubs, open kitchen/family, and classrooms. It's well-oriented: the 5-fan bank can blow up or sideways, with one side against a wall. Finally, it really is luggable -- weighing only 6 lbs! Luggable comes with a side suitcase handle installed.
Note the blue lights will always be on when the fans are powered, and are too bright for bedrooms, but make a nice nightlight elsewhere in the house. The blue lights use 4.4W more than a basic 5-black SickleFlow.
The optional hex mesh filter guard protects from prying little hands and claws.
Unassembled Kit has 30 minute assembly time.
Considering shipping prices, unassembled STEM Kit w/o filters can save ~$50 when 3M Filtrete MPR1900/MPR2200 16x25 are purchased separately fromCostco,Lowes, Amazon. Outside the US, try Digi-Key
While working toward UL507 certification to satisfy CARB air cleaner regulations, only unassembled kits without filters will ship to California.
Luggable hardboard panels do not contain lead, Formaldehyde, or PFAS. However, like cooking, lasercutting can generate trace carcinogens hence:
⚠️WARNING: This product may contain chemicals known to the State of California to cause cancer. www.P65Warnings.ca.gov for more information
Luggables are our lightweight, portable, and cost-effective CR Boxes for medium-large rooms. The 20x26x7" Luggable XL boasts 7 premium SickleFlow fans, a great fit for medium-large rooms like open kitchen/family, classrooms, cafeterias, gyms, etc. It's well-oriented: the main 5-fan bank can blow up or sideways, with one side against a wall. Finally, it really is luggable -- weighing only 8 lbs! Luggable XL comes with a side suitcase handle installed.
The optional hex mesh filter guard protects from prying little hands and claws.
Unassembled Kit has 30 minute assembly time.
Considering shipping prices, unassembled STEM Kit w/o filters save ~$50 when 3M Filtrete MPR1900/MPR2200 20x25 are purchased separately from Costco, Lowes, or Amazon. Outside the US, try Digi-Key
While working toward UL507 certification to satisfy CARB air cleaner regulations, only unassembled kits without filters will ship to California.
Luggable XL hardboard panels do not contain lead, Formaldehyde, or PFAS. However, like cooking, lasercutting can generate trace carcinogens hence:
⚠️WARNING: This product may contain chemicals known to the State of California to cause cancer. www.P65Warnings.ca.gov for more information
Luggables are our lightweight, portable, and cost-effective CR Boxes for medium-large rooms. The 20x26x7" Luggable XL boasts 7 premium SickleFlow fans, a great fit for medium-large rooms like open kitchen/family, classrooms, cafeterias, gyms, etc. It's well-oriented: the main 5-fan bank can blow up or sideways, with one side against a wall. Finally, it really is luggable -- weighing only 8 lbs! Luggable XL comes with a side suitcase handle installed.
The optional hex mesh filter guard protects from prying little hands and claws.
Unassembled Kit has 30 minute assembly time.
Considering shipping prices, unassembled STEM Kit w/o filters save ~$50 when 3M Filtrete MPR1900/MPR2200 20x25 are purchased separately from Costco, Lowes, or Amazon. Outside the US, try Digi-Key
While working toward UL507 certification to satisfy CARB air cleaner regulations, only unassembled kits without filters will ship to California.
Luggable XL hardboard panels do not contain lead, Formaldehyde, or PFAS. However, like cooking, lasercutting can generate trace carcinogens hence:
⚠️WARNING: This product may contain chemicals known to the State of California to cause cancer. www.P65Warnings.ca.gov for more information
Luggables are our lightweight, portable, and cost-effective CR Boxes for medium-large rooms. The 25x25x7" Luggable XXL boasts 9 premium SickleFlow fans, a great fit for medium-large rooms like open kitchen/family, classrooms, cafeterias, gyms, etc. It's well-oriented: the main 5-fan bank can blows up and the 4-fan bank sideways, with one side against a wall. Finally, it really is luggable -- weighing only 10 lbs! Luggable XXL comes with a side handle installed.
The optional hex mesh filter guard protects from prying little hands and claws.
Unassembled Kit has 30 minute assembly time.
Considering shipping prices, unassembled STEM Kit w/o filters save ~$50 when 3M Filtrete MPR1900/MPR2200 25x25 are purchased separately from Lowes. Outside the US, try Digi-Key
While working toward UL507 certification to satisfy CARB air cleaner regulations, only unassembled kits without filters will ship to California.
Luggable XXL hardboard panels do not contain lead, Formaldehyde, or PFAS. However, like cooking, lasercutting can generate trace carcinogens hence:
⚠️WARNING: This product may contain chemicals known to the State of California to cause cancer. www.P65Warnings.ca.gov for more information
Luggables are our lightweight, portable, and cost-effective CR Boxes for medium-large rooms. The 25x25x7" Luggable XXL boasts 9 premium SickleFlow fans, a great fit for medium-large rooms like open kitchen/family, classrooms, cafeterias, gyms, etc. It's well-oriented: the main 5-fan bank blows upward and the 4-fan bank sideways, with one side against a wall. Finally, it really is luggable -- weighing only 8 lbs! Luggable XL comes with a side suitcase handle installed.
The optional hex mesh filter guard protects from prying little hands and claws.
Unassembled Kit has 30 minute assembly time.
Considering shipping prices, unassembled STEM Kit w/o filters save ~$50 when 3M Filtrete MPR1900/MPR2200 25x25 are purchased separately from Lowes. Outside the US, try Digi-Key
While working toward UL507 certification to satisfy CARB air cleaner regulations, only unassembled kits without filters will ship to California.
Luggable XXL hardboard panels do not contain lead, Formaldehyde, or PFAS. However, like cooking, lasercutting can generate trace carcinogens hence:
⚠️WARNING: This product may contain chemicals known to the State of California to cause cancer. www.P65Warnings.ca.gov for more information
Luggables are our lightweight, portable, and cost-effective CR Boxes covering rooms from small to large. This 16x25x7" 5-Arctic Luggable fits small-medium bedrooms, offices and dining rooms. It's well-oriented: the 5-fan bank can blow up or sideways, with one side against a wall. Finally, it really is luggable -- weighing only 6 lbs! Comes with a side suitcase handle installed.
The Arctic P12 fans are a tad quieter than SickleFlow, so ideal for sleeping in bedrooms. Five Arctic P12 can clean standard 130 sq ft bedrooms in 6 minutes (10ACH).
Hex mesh filter guards are available as accessory to protect from prying little hands and claws.
Unassembled Kit has 20-30 minute assembly time. See STEM Kits page for guides & videos.
Considering shipping prices, unassembled STEM Kit w/o filters can save ~$50 when 3M Filtrete MPR1900/MPR2200 16x25 are purchased separately from Costco, Lowes, Amazon. Outside the US, try Digi-Key.
While working toward UL507 certification to satisfy CARB air cleaner regulations, only unassembled kits without filters will ship to California.
Luggable hardboard panels do not contain lead, Formaldehyde, or PFAS. However, like cooking, lasercutting can generate trace carcinogens hence:
⚠️WARNING: This product may contain chemicals known to the State of California to cause cancer. www.P65Warnings.ca.gov for more information
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Variant5-fan Arctic / SickleFlow
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Filters2 Filtrete 16x25" MPR1900+
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CADR by Intertek189 cfm (Arctic), 211 cfm (SickleFlow)
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Room Occupants (40cfm per)5
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5 ACH Coverage300 sq ft
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Power8 W
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Sound Power / Pressure41.7 / 33.7 dBA (Arctic), 34.8 (SickleFlow)
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Dimensions16x25x7"
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Weight6 lbs
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VariantXL - 7 SickleFlow
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Filters2 Filtrete 20x25" MPR1900+
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CADR by Intertek323 cfm (550 m3/hr)
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Room Occupants (40cfm per)8
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5 ACH Coverage485 sq ft
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Power10.8 W
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Sound Power / Pressure45.3 / 37.3 dBA
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Dimensions20x25x7"
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Weight8 lbs
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VariantXXL - 9 SickleFlow
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Filters2 Filtrete 25x25" MPR1900+
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CADR by Intertek415 cfm (716 m3/hr)
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Room Occupants (40cfm per)10
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5 ACH Coverage622 sq ft
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Power13 W
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Sound Power / Pressure46 / 38 dBA
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Dimensions25x25x7"
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Weight10 lbs
- Integrated Suitcase Handle
- Stands tall or wide against a wall
- Lightweight: 6-10 lbs
- Internal pre-tensioner cords for easy slide-out filter changes and snug fit.
- UL-listed 120V AC to 12V 2A DC wall plug w/ 5.5x2.1mm barrel socket


Unintuitively Quiet
It's dead simple. CleanAirKits deliver top-end portable HEPA performance and they're QUIET. At that performance level, HEPA are not quiet -- people turn them down or turn them off. And we need them to be on and high-performing to passively remove covid and pollutants.The exceptionally large, unencumbered filtration area provided by dual micro pleated 3M Filtretes, and our diffuse banks of silent pressure fans make this possible. Delivering 200-500 cubic feet per minute of clean air means the boxes filter 1000-2000 faster than an adult human breathes!




Always On Safety
Since a Clean Air Kit is not loud and power hungry like a HEPA, it can always be running. And if it's always running, it's always adding a layer of protection for you and your family from smoke & airborne transmission of viruses like Flu, RSV, and Covid.
This corresponds to the pandemic HVAC best practice of continuously running furnace fan circulation with MERV13 or MERV14 filtration.

March 2022: Study of 10,441 Italian Classrooms with
varying mechanical ventilation up to 6 ACH.


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Quiet on Full
Clean Air Kits produce 5-10x less noise than HEPA purifiers at max capacity.
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One Speed Design
Speed controls defeat the efficacy of most HEPAs -- people turn them down to quiet where air cleaning slows. We have just one speed: silent full blast!
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Unprecedented Energy Efficiency
Decades of competition has driven amazing silence + efficiency in PC fans. Our fan banks use 6-16W -- comparable to a LED bulb and easy to run off batteries!

Products are returnable within 30 days for a full refund less $44 filter hygiene cost and shipping. Exchanges to other models with same filter sizes are free except for shipping, otherwise $44 for new filters.
All products ship from Missouri via UPS according to an average rate per product (until backend supports live rates accurately). Due to high demand and customizations products may take up to two weeks to ship.
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"Standalone HEPAs or Corsi-Rosenthal boxes are a quick way to lower the risk of inhaling SARS-CoV-2 virus. Filtering the virus out of the air reduces the chance of inhaling it---simple logic. The other option is to filter/trap it with a mask before it is released or inhaled."
Kim Prather, PhD
Distinguished Professor, UCSD
Director NSF Center for Aerosol Impacts
on Chemistry of the Environment -
3M tested the Corsi-Rosenthal Box with the same rigor it applies to its Filtrete brand of products and found the C-R Box “performs exceptionally well in its ability to capture unwanted airborne particles, including viruses," says Kelsey Hei, a 3M application engineer.
Fortune: A DIY air purifier that costs
under $100 to make is taking Americas
classrooms by storm -
“A C-R box uses MERV-13 filters, which can only remove 60% to 80% of those particles, (but) the fan on the C-R box is much bigger and can clean more air,” says Joseph Fox, chair of the indoor air quality advisory group with the Ontario Society of Professional Engineers, who works with schools on HVAC issues. “All you care about in the end is the total rate at which the air is cleaned. So, what the C-R box lacks in efficiency, it makes up for in airflow.”
Fortune: A DIY air purifier that costs
under $100 to make is taking Americas
classrooms by storm -
Many exciting innovations have emerged in the last two years alone. Once it is clearly acknowledged the virus is airborne, it becomes a very fixable problem. People will shift from cleaning surfaces to cleaning indoor air where we spend 90% of our time. This has huge positive health ramifications beyond COVID-19 by reducing the spread of all airborne pathogens, pollutants including wildfire smoke, and other asthma-inducing aerosols.
Kim Prather, PhD
Distinguished Professor, UCSD
Director NSF Center for Aerosol Impacts
on Chemistry of the Environment -
To lower inhalation dose of virus-laden respiratory aerosol particles (a major key to suppressing the mortaility and mobidity associated with COVID-19) the three Rs must be advanced from where they are now. Remove, Reduce, Remediate.
Richard Corsi, PhD PE (Texas)
Dean of Engineering, UC Davis -
Appropriate combos of Remove, Reduce, & Remediate are what many of us called layered risk reduction (or layered inhalation dose reduction) back in Spring 2020. Not rocket science. For those who still care about reducing the spread of COVID-19, it all still applies, folks.
Richard Corsi, PhD PE (Texas)
Dean of Engineering, UC Davis -
"I am thrilled to be part of something that is so accessible to people around the world, helping to protect children in school and families in their homes, all the while inspiring children about the power of STEM."
Richard Corsi, PhD PE (Texas)
Dean of Engineering, UC Davis















