Start with your purifier instructions and the product’s box contents. A filter assembly can contain several layers, and a replacement pack does not necessarily contain every part inside the purifier.
The Coway AP-1512HH and 200M replacement pack listed here contains one HEPA filter and two deodorization filters. It excludes the purifier’s reusable pre-filter.
Levoit’s Core 300-RF is a cylindrical replacement assembly. Blueair’s F2MAX is the main Particle + Carbon filter for the 211i Max. Do not confuse a separate outer pre-filter with the item in the buying link.
Only wash a component when the instructions for your exact model explicitly allow it. “Washable pre-filter” does not mean the main particle or carbon filter can be washed.
Before ordering, compare the reference and the number of supplied filters. One filter, two filters and a set containing several different layers are distinct packs.