2001 Boxster S Front bumper center cooling duct inlet trim ring removable?

[chaiyz]

But I'm just hoping someone that's taken it apart could respond as to what the trick is. I'm not forcing it but it's not budging.

[paulofto]

I put 'gutter guard' mesh on my intakes including the centre. I chose to mount the mesh to the duct rather than the bumper and it worked quite well. I used 3 plastic expansion rivets to attach the mesh after drilling holes in the duct.