A:Answer Thank you for your inquiry Dalton. We are not sure why these are listed as purchased together often, as the correct HEPA filter for this unit is the Honeywell G HEPA filter, which is a rectangular box filter, not a domed Dyson filter. If you have any other questions, please do not hesitate to contact our consumer relations team by emailing us at SocialSupport@helenoftroy.com. Thank you.
