Nispira AER1 HEPA Replacement Filter with Carbon Booster for Holmes Air Purifier HAPF30AT-U4R HAP242-NUC Air Purifier These filters have been approved

These filters have been approved and certified by USA governmnet FDA and  European ROHS

and find the 1

If you experience reduced pressure when using a filter with a humidifier

and let cool water slowly extract flavor over time

LMVM2033BD

Nispira AER1 HEPA Replacement Filter with Carbon Booster for Holmes Air Purifier HAPF30AT-U4R HAP242-NUC Air Purifier These filters have been approvedQUALITY AIR FILTERS: premium HEPA filters and Carbon filters compatible with Holmes and Bionaire air purifiers. HEPA FILTER: HEPA filters remove up to 99. 97 percent of airborne particles as small as 0. 3 microns. Odor and Smoke Removal: Effectively removes odors, smoke, and volatile organic compounds (VOCs) from the air. Each pack has 4 carbon pre filters. Suggest to replace every 3 months the most to optimize the performance Easy to install. Just