Designed to replace the stock activated charcoal block filter with a combo of hepa and activated charcoal cloth. This was designed for using the following items:
Hepa filter: https://www.amazon.ca/dp/B07HHQKJ4G?psc=1&ref=ppx_yo2ov_dt_b_product_details
Activated Charcoal: https://www.amazon.ca/dp/B00AESC8VW?psc=1&ref=ppx_yo2ov_dt_b_product_details
Cut two strips to size of the charcoal cloth. Replace on a monthly basis.