it's true that cube might outperform many commercial grade purifiers but unfortunately it's only because fires/pandemic have skyrocketed prices on purifiers and

it's true that cube might outperform many commercial grade purifiers but unfortunately it's only because fires/pandemic have skyrocketed prices on purifiers and made a bunch of scammy looking ones. As you see with that box, having a filter medium and a fan is all you need. No plasma/uvc or charcoal filters necessary. I only have a couple purifiers that are $100 each and have a good centrifugal fan and a filter in front of it that can be replaced for $30. A box fan as pictured doesn't have as much static pressure to pull through the filter well, but because you have four filters worth of surface area its fine. All you could upgrade with a commercial solution is having a smaller physical footprint.