Compatibility: only compatible with puritix air purifier with true hepa model hap450, asin: b08jshsf65 true hepa technology: h13 hepa filter with activated carbon filter captures up to 99.97% of particles to improve indoor air quality fine active carbon filter: fine pre-filter traps larger particles in the air like hairs, pet fur, lint, and it filters particles as small as 0.3 microns long lasting: for optimum performance, replace filter every 3 months depending on the use and environment size:23*30.2cm, warm note: the air purifier filter can not be washable