3 microns (300 times smaller than human hair) from the air

heat stability and retention are constant and a non-issue

but it also works wonderful on all floor types

These charged particles are better attracted to the filter where they become entangled in the media

Gaggia TS Espresso Machine Features:

Hoover Generic 13" WindTunnel Vacuum Brush Roll Austin Air Filters & Accessories 3 microns (300 times smaller[custom_html] The H501 13" Brushroll is made by the original part manufacturer CWP Technologies for Hoover 13" WindTunnel upright vacuums. The CWP Technologies H501 brush bar features two rows of nylon bristles, ball bearings, and end caps. It is engineered for balance, and will function as a good replacement for the brush bar in your Hoover 13" WindTunnel upright. Remember to frequently monitor the health of your brushroll and keep it clean to