3 Stage Enhanced Filtration System: YIOU air purifier S1 replacement filter consists of Pre-filter, True HEPA filter and High-Grade Activated Carbon Filter.Only use YIOU air filter to keep your YIOU air purifier working at its best working condition.
Non-woven Fabric Pre-filter: the first layer of YIOU air filter traps small airborne particles like dust, pet hair.
True H13 HEPA Filter: the HEPA layer filters over 99% of particles down to 0.1 microns such as pollen, pet dander, dust, and smoke.
Original Replacement Filter:With Advanced Activated Carbon Filter contains advanced carbon particles, effectively analyze and chemically decompose the odor and harmful gases in the air.Suitable for all the indoor environments.
Pet Allergy Filter:Used Ammonia Removal Activated Carbon layer,with the advanced carbon particle filter for ammonia removal, which can effectively remove the pet odors and trap the pet fur.Suitable for most indoor environments especially with pets.
Helpful Information: each YIOU air filter is well-sealed to maintain its lifetime.It is recommended to replace filters for every 3-6 months.