This fits your .

HQRP Replacement Carbon Odor Filters which naturally deodorizes the air by absorbing and eliminating odors that may come from pets, garbage, bathrooms, smoke, litter boxes or cooking.
These activated carbon (charcoal) filters are for use in Holmes and Bionaire branded table top and tower air purifiers. The Carbon filter can be combined with Holmes / Bionaire See Side Panel Air Purifier Filters for trapping tobacco and cigarette smoke, pet odors, cooking odors and household chemicals. The Carbon Filter is great added level of filtration to deliver better air quality.
Compatible with: Holmes HAP9412, HAP9413, HAP9414, HAP9415, HAP9421, HAP9422, HAP9423, HAP9424, HAP9425 Air Purifiers, Holmes BHOR31-1 AOR31 AOR31-U carbon filter Replacement.

HQRP 4-pack Carbon Filter for Holmes HAP9412 HAP9413 HAP9414 HAP9415 HAP9421 HAP9422 HAP9423 HAP9424 HAP9425 Air Purifiers + HQRP Coaster - B078WD72XB