Miele Vacuum Cleaner Active HEPA Filter

I replaced the exhaust filter of my "Classic C1" model with the Miele HEPA filter SF-HA30, that I had to order separately as its not included with the Classic C1 vacuum. Had to lookup a youtube video because the documentation on this HEPA installation specifically is not great.You need to completely remove the black plastic honeycomb and the soft 'Air Clean' microfilter (do not use double filter, either use Air Clean or the HEPA - not both ). Then you angle and push the SF-HA30 HEPA filter into place directly over the opening till it snaps into place fully, making an airtight seal with rubber gasket at the bottom of the SF-HA30 HEPA, good quality. Black mesh on the top of the vacuum lid stays in place and looks washable. Pre-motor filter behind the blue honeycomb has replacement that comes free when you buy Miele GN bags, looks like it gets replaced every other full GN bag.