Review on VEVA Premium 2 HEPA Filters and 6 Pack of Pre-Filters - Compatible with Air Purifier Models AC4100/AC4150BLCA and Replacement FLT4100 Filter E by Andre Brignac

I bought these replacement filters for my GermGuardian AC4100 air purifier. The HEPA filters look identical to the official GermGuardian filters. Aside from the "VEVA" sticker, the only difference I see is that the carbon pre-filters only attach to the HEPA filter on two sides, not all four. It has absolutely no effect on anything. The carbon pre-filter is still very reliable. (I believe the official brand puts velcro on the charcoal filters themselves, but I already threw away my old filter and can't remember. However, this small difference is not significant.) The HEPA filter is the same, and the charcoal filters shine also to have the same density as marks. You also get six carbon filters instead of two.