Review on 🌀 DuraBasics AP-1512HH HEPA Filters - Compatible with Coway AP-1512HH Filter Replacement | 2 HEPA Filters & 8 Pre-Cut Carbon Prefilters | Coway AP-1512HH & Filter Replacement Compatible by Jim Agosta

UPDATE: I took new measurements on a dirtier day. After this measurement, I lowered the number of stars from 2 to 1: Here are the details for submitting the test on a significantly more polluted day: Polluted day, no air filters: 14.5:87; pm 0.3: 9999 dirty day, original Coway filter (factory new): pm 2.5: 2; pm 0.3: 636 contaminated days, original Coway filter (3 months): pm 2.5: 0; 3:00 p.m.: 288 contaminated days, Durabasics filter (new): 2:50 p.m.: 15; pm 0.3:1932 Attached new photos and two videos showing how the original Coway filter fits and how the new Durabasics filter fits (has huge gaps so lots of unfiltered air gets through) --------- --- ---- - ----------------- I bought 1 Durabasics filter and 1 original Coway filter and decided to compare them. Results: air cleaner off: 0.3 h = 600, air cleaner on with new Durabasics filter: 0.3 h = 120, air cleaner on with new original Coway filter: 0.3 h = 38. So a real HEPA filter of the Class H13. The seller says it's H13, but there's absolutely nothing on the box to support that claim. The results also show that this is not a very good filter. True hepa filters are very essential for 0.3-0.5 hours a day which are very difficult to catch and are filtered in the brain when we breathe them in. I would recommend spending a little more and getting a genuine Coway filter which looks better than a HEPA filter.