That’s a box fan CR box
A filter with PC fans isn’t a “CR box”—a Corsi-Rosenthal box is specifically a design based on box fans. For example, Wikipedia, US Davis, Clean Air Crew, and the Corsi-Rosenthal Foundation mention only box fans.
Usage varies—the top five posts on /r/crboxes all use PC fans. Other guides do too, and CleanAirKits and Nukit both describe themselves as PC fan CR boxes.
Interesting! I hadn’t realized people had started using the term this way!
A filter with PC fans isn’t a “CR box”—a Corsi-Rosenthal box is specifically a design based on box fans. For example, Wikipedia, US Davis, Clean Air Crew, and the Corsi-Rosenthal Foundation mention only box fans.
Usage varies—the top five posts on /r/crboxes all use PC fans. Other guides do too, and CleanAirKits and Nukit both describe themselves as PC fan CR boxes.
Interesting! I hadn’t realized people had started using the term this way!