Pollen Filter C180

I need to change the pollen filter on my C180 Classic Auto (air Con) 1996.
Any idea where this is located? It is not in owner manual.
Any help greatly appreciated.
Many thanks
Paul Wilson

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file

Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.