This is the HEPASilent particle replacement filter for the Blueair ECO10 air purifier.
The Blueair ECO10 Particle filter uses Blueair’s patented HEPASilent technology. This filtration technology is a combination of mechanical and electrostatic filtration, and allows the Blueair ECO10 air purifiers to deliver more clean air at a faster rate with less noise.

The Blueair ECO10 Particle filter is a Three-Stage Progressive Filter – a filter that resembles having many filters in one.
The filter is made up out of three different levels of millions of thin fibres, and with its ‘lock-in’ design, once captured the particles are not re-released back into your environment, even when the filter is heavily loaded.
The first layers capture larger particles like pollen and dust, and the later layers capture smaller particles like bacteria and exhaust particles.
The ECO10 Particle filter kit includes three-particle filters, one for each side that clean air is released from the unit.
Regular filters are thinner and mostly consist of the same fibre size and material throughout, this leads to them clogging up sooner. However, the unique design of the Blueair ECO10 Three-Stage Progressive Filter resists clogging and allows the Blueair ECO10 air purifiers to perform longer on their peak performance.