PHILIPSOriginal Replacement Filter for 2-in-1 Air Purifier and Humidifier 3400 Series AC3420 and AC3421, HEPA NanoProtect + Active Carbon, 12 Months Lifetime, Black/White (FY3400/30)

Versuni Philips Genuine Replacement Filter for 3400 AC3420 and AC3421 Series 2 in 1 Air Purifier and Humidifier HEPA NanoProtect + Activated Carbon, 12 Month Lifespan, Black/White (FY3400/30)

Versuni Philips Genuine Replacement Filter FY3446/30 for Humidifier HU3916 and HU3918, 3 Layer Filter, Pack of 1