Mark Read on Twitter: "@DrEricDing Those 3M 2200 filters are really hard to find locally at Home Depot & Lowes. Much larger selection on Amazon, including MERV 13 through 16. Helpful tip:
![Amazon.com: Flintar H13 True HEPA Replacement Filter, Compatible with SilverOnyx 5-Speed Air Purifier KJ150F-C02, 4-in-1 H13 Grade True HEPA filter, For Large Room 500 sq ft, 2-Pack : Home & Kitchen Amazon.com: Flintar H13 True HEPA Replacement Filter, Compatible with SilverOnyx 5-Speed Air Purifier KJ150F-C02, 4-in-1 H13 Grade True HEPA filter, For Large Room 500 sq ft, 2-Pack : Home & Kitchen](https://m.media-amazon.com/images/I/91UqMYIX2vL._AC_SX522_.jpg)
Amazon.com: Flintar H13 True HEPA Replacement Filter, Compatible with SilverOnyx 5-Speed Air Purifier KJ150F-C02, 4-in-1 H13 Grade True HEPA filter, For Large Room 500 sq ft, 2-Pack : Home & Kitchen
![Amazon.com: Air Purifiers for Home, Premium Desktop Air Purifier with True H13 HEPA filter for Bedroom, 3-Stage Filtration Remove 99.97% Tiny Objects, Perfect for Home Large Room, Bedroom, Living Room, Kitchen and Amazon.com: Air Purifiers for Home, Premium Desktop Air Purifier with True H13 HEPA filter for Bedroom, 3-Stage Filtration Remove 99.97% Tiny Objects, Perfect for Home Large Room, Bedroom, Living Room, Kitchen and](https://m.media-amazon.com/images/I/61PP1ipO84L._AC_SL1500_.jpg)
Amazon.com: Air Purifiers for Home, Premium Desktop Air Purifier with True H13 HEPA filter for Bedroom, 3-Stage Filtration Remove 99.97% Tiny Objects, Perfect for Home Large Room, Bedroom, Living Room, Kitchen and
![Medify Air MA-25 Value Pack includes a free set of replacement filters - H13 HEPA, White (Walmart Exclusive) - Walmart.com Medify Air MA-25 Value Pack includes a free set of replacement filters - H13 HEPA, White (Walmart Exclusive) - Walmart.com](https://i5.walmartimages.com/asr/7d9bc588-91e3-4f74-9b2a-c177f0e57ffc.140c8b38b93f0b11f5586eaefa015fa7.jpeg)
Medify Air MA-25 Value Pack includes a free set of replacement filters - H13 HEPA, White (Walmart Exclusive) - Walmart.com
![Amazon.com: Air Purifier, Zigma AI Air Purifiers for Home Large Room up to 1580 ft2, H13 True HEPA Filter Quiet Removal 99.99% Dust, Pollen, Smoke, Pet Odors, Smart WIFI Air Cleaner for Amazon.com: Air Purifier, Zigma AI Air Purifiers for Home Large Room up to 1580 ft2, H13 True HEPA Filter Quiet Removal 99.99% Dust, Pollen, Smoke, Pet Odors, Smart WIFI Air Cleaner for](https://m.media-amazon.com/images/I/81+wus2y4WS._AC_SX522_.jpg)
Amazon.com: Air Purifier, Zigma AI Air Purifiers for Home Large Room up to 1580 ft2, H13 True HEPA Filter Quiet Removal 99.99% Dust, Pollen, Smoke, Pet Odors, Smart WIFI Air Cleaner for
![Buy CLEANFORCE Extra large Air Purifier for home large room, covers 3000 sqft, H13 True HEPA Filter, Filters 99.97% dust, pet hair, smoke, odor, pollen, VOCs, Commerical Air Cleaner for office, classroom Buy CLEANFORCE Extra large Air Purifier for home large room, covers 3000 sqft, H13 True HEPA Filter, Filters 99.97% dust, pet hair, smoke, odor, pollen, VOCs, Commerical Air Cleaner for office, classroom](https://www.ubuy.com.tr/productimg/?image=aHR0cHM6Ly9tLm1lZGlhLWFtYXpvbi5jb20vaW1hZ2VzL0kvNzFjYWYtNENjeUwuX0FDX1NMMTUwMF8uanBn.jpg)
Buy CLEANFORCE Extra large Air Purifier for home large room, covers 3000 sqft, H13 True HEPA Filter, Filters 99.97% dust, pet hair, smoke, odor, pollen, VOCs, Commerical Air Cleaner for office, classroom
![Amazon.com: LEVOIT Air Purifier for Home, H13 True HEPA Filter for Smokers, Smoke, Dust, Mold, and Pollen in Bedroom, Filtration System Odor Eliminators for Office with Optional Night Light, 1 pack, Black : Amazon.com: LEVOIT Air Purifier for Home, H13 True HEPA Filter for Smokers, Smoke, Dust, Mold, and Pollen in Bedroom, Filtration System Odor Eliminators for Office with Optional Night Light, 1 pack, Black :](https://m.media-amazon.com/images/S/aplus-media-library-service-media/aa7f648b-c337-408b-b22f-5e27ed76174f.__CR0,0,1464,600_PT0_SX1464_V1___.png)
Amazon.com: LEVOIT Air Purifier for Home, H13 True HEPA Filter for Smokers, Smoke, Dust, Mold, and Pollen in Bedroom, Filtration System Odor Eliminators for Office with Optional Night Light, 1 pack, Black :
![Amazon.com: Flintar H13 True HEPA Replacement Filter, Compatible with SilverOnyx 5-Speed Air Purifier KJ150F-C02, 4-in-1 H13 Grade True HEPA filter, For Large Room 500 sq ft, 2-Pack : Home & Kitchen Amazon.com: Flintar H13 True HEPA Replacement Filter, Compatible with SilverOnyx 5-Speed Air Purifier KJ150F-C02, 4-in-1 H13 Grade True HEPA filter, For Large Room 500 sq ft, 2-Pack : Home & Kitchen](https://m.media-amazon.com/images/I/91hi3U01+oL._AC_SL1500_.jpg)
Amazon.com: Flintar H13 True HEPA Replacement Filter, Compatible with SilverOnyx 5-Speed Air Purifier KJ150F-C02, 4-in-1 H13 Grade True HEPA filter, For Large Room 500 sq ft, 2-Pack : Home & Kitchen
![Amazon.com: Medify MA-50 Genuine Replacement Filter | for Smoke, Smokers, Dust, Odors, Pet Dander | 3 in 1 with Pre-filter, H13 HEPA, and Activated Carbon for 99.9% Removal | 2-Pack : Home & Kitchen Amazon.com: Medify MA-50 Genuine Replacement Filter | for Smoke, Smokers, Dust, Odors, Pet Dander | 3 in 1 with Pre-filter, H13 HEPA, and Activated Carbon for 99.9% Removal | 2-Pack : Home & Kitchen](https://m.media-amazon.com/images/I/815PBVf-dLL._AC_SL1500_.jpg)
Amazon.com: Medify MA-50 Genuine Replacement Filter | for Smoke, Smokers, Dust, Odors, Pet Dander | 3 in 1 with Pre-filter, H13 HEPA, and Activated Carbon for 99.9% Removal | 2-Pack : Home & Kitchen
![Amazon/ebay Hotsale Oem Air Purifier Replacement True Hepa Cylindrical Hepa Filter H11 H12 H13 H14 - Buy Cylindrical Hepa Filter,Air Purifier True Hepa,Hepa Filter H13 Product on Alibaba.com Amazon/ebay Hotsale Oem Air Purifier Replacement True Hepa Cylindrical Hepa Filter H11 H12 H13 H14 - Buy Cylindrical Hepa Filter,Air Purifier True Hepa,Hepa Filter H13 Product on Alibaba.com](https://sc04.alicdn.com/kf/Hee827b23caef41f5ae891a6bde9fe041c.jpg)
Amazon/ebay Hotsale Oem Air Purifier Replacement True Hepa Cylindrical Hepa Filter H11 H12 H13 H14 - Buy Cylindrical Hepa Filter,Air Purifier True Hepa,Hepa Filter H13 Product on Alibaba.com
![Amazon.com: LINNIW 2 Pack H13 True HEPA Replacement Filter ME-40 Compatible with MA-40 Air Purifier, 3-in-1 Filters Contains High-Efficiency Activated Carbon Filter : Home & Kitchen Amazon.com: LINNIW 2 Pack H13 True HEPA Replacement Filter ME-40 Compatible with MA-40 Air Purifier, 3-in-1 Filters Contains High-Efficiency Activated Carbon Filter : Home & Kitchen](https://m.media-amazon.com/images/I/616Fm+zSPIL._AC_SS450_.jpg)
Amazon.com: LINNIW 2 Pack H13 True HEPA Replacement Filter ME-40 Compatible with MA-40 Air Purifier, 3-in-1 Filters Contains High-Efficiency Activated Carbon Filter : Home & Kitchen
![H13-H14 Absolut HEPA Filter by High Capacity Filter HEPA Air Filter - China Ahu HEPA Filter, HEPA Air Filter | Made-in-China.com H13-H14 Absolut HEPA Filter by High Capacity Filter HEPA Air Filter - China Ahu HEPA Filter, HEPA Air Filter | Made-in-China.com](https://image.made-in-china.com/202f0j00CrsfeoutJpkH/H13-H14-Absolut-HEPA-Filter-by-High-Capacity-Filter-HEPA-Air-Filter.webp)
H13-H14 Absolut HEPA Filter by High Capacity Filter HEPA Air Filter - China Ahu HEPA Filter, HEPA Air Filter | Made-in-China.com
![Amazon.com: HoMedics TotalClean Replacement True HEPA Filter for use with True HEPA AP-15 and AF-10, Removes Up to 99.97% Airborne Particles : Home & Kitchen Amazon.com: HoMedics TotalClean Replacement True HEPA Filter for use with True HEPA AP-15 and AF-10, Removes Up to 99.97% Airborne Particles : Home & Kitchen](https://m.media-amazon.com/images/I/618cWTYt8VL._AC_SL1000_.jpg)