Brisk Box Air Purifier (3-fan Corsi-Rosenthal Box)

The Brisk Box Air Purifier (3-fan Corsi-Rosenthal Box) is our quickest-to-build and most affordable DIY air purifier for small to medium spaces. Designed for quiet, energy-efficient performance, its durable reusable panels and simple tape-together design make assembly fast and easy—typically in less than 10 minutes. Powered by three premium UL-registered Cooler Master Mobius 120P Black Edition fans, the Brisk Box delivers approximately 200 CADR (CFM) while operating significantly quieter and using less energy than many large retail HEPA air purifiers. The four-filter design provides a large filtration surface area for excellent efficiency and helps extend filter life to approximately 18 months under typical use. Ideal for bedrooms, offices, classrooms, and other small to medium rooms, the Brisk Box provides enough clean air for up to 5 occupants (40 CFM per person) or spaces up to approximately 320 square feet. Choose Your Assembly Option Pre-Assembled Fan Panel – Fans arrive installed so you only need to tape on the filters. DIY Fan Assembly Kit – Save $20 by assembling the fan panel yourself using the included push pins, fan grills, cable harness, and zip ties. Compatible Filters (Sold Separately) The Brisk Box uses four 1-inch filters. Compatible options include: Four 12" × 20" × 1" filters Four 12" × 24" × 1" filters For a more compact square design, you can also build the kit using two 10" × 20" × 1" filters and two 12" × 20" × 1" filters by trimming the included coroplast panel. What's Included Reusable Brisk Box panels Three Cooler Master Mobius 120P Black Edition fans White duct tape 12V DC power supply Fan grills Push pins Cable harness Zip ties Assembly instructions