Northbox Filter Changes 

The North Box 5X and 5X Black use tape to seal the filter to the frame. After 6-12 months of use or a bad Wildfire Smoke event it's time to install fresh filters. This video shows how to safely remove the tape and install new filters.
Use a 2" "gaffer" style tape, we recommend this brand:
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Learn more about our virtually silent air purifiers:
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