What are the structural components of a Corsi-Rosenthal Box?
Answer
Four MERV-13 filters attached to a standard box fan
A Corsi-Rosenthal Box is a DIY air filtration solution constructed by attaching four MERV-13 filters to a standard box fan. This configuration is widely recognized for its high Clean Air Delivery Rate (CADR) relative to its low construction cost. While it lacks the sleek design, low noise, and specialized features like carbon filtration found in commercial units, it provides robust particulate removal, making it a powerful tool for addressing sudden air quality concerns like wildfire smoke.
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