Product review (4 stars): Happy With the Seller!-and the filter. Big fan of Miele vacuums.
I would give this filter five stars but its expensive. I have bought one every year since I had the vacuum. The dealer- Commercial Water Distributing -was just fine and had a lower price than stores do. This is a very fine micron filter that removes allergens and ultra fine dust particles. It usually costs close to 50$. (cough)  Happy with filter and seller!  I replace this filter once a year.