How do you change the Air Filter 1999 MB E320?

I change the air filter on my 1998 E320 by: having a filter ready from the dealer, unclipping the 6 clips around the box and the 2 on the intake tube. I also have a shop vac ready for the leaves & etc that get trapped in the housing under the filter. I am careful the housing is back together correctly so the clips can snap back easy.