From the web site: N085PWTKGW

PUREBURG Replacement True HEPA Filter Kit Compatible with Hunter H-HF400-VP H-PF400 Fit Hunter HP400 Cylindrical Tower Air Purifier,H13 3-Stage Filtration Activated carbon Air Clean Dust VOCs.

There are also several carbon pre filters in the center of the sealed cylinder filter have not opened don’t want to guess just passing this info on