Air Quality Monitor Accurate Tester for CO2 Formaldehyde(HCHO) TVOC/AQI Multifunctional Air Gas Detector Real Time Data&Mean Value Recording for Home Office and Various Occasion

WINIX Air Purifier ZERO, H13 HEPA Filter, CADR 390m³/h (Up to 99 m²) for Allergy Sufferers. PlasmaWave Technology Reduce 99.999% Hay Fever, Pollen and Odours. 8h Timer. For Living Rooms and Offices

PUREBURG 115115 Replacement True HEPA Filter Compatible with Winix ZERO (AZBU330-HWB), P300 Air Purifiers Filter A,H13 Activated Carbon Pre-filters