Mesh grill?
 

Hey guys anyone added a nice chrome or silver mesh grill over the lower intakes? Would love to see some pictures if you have. Also wanted to know if anybody changed out the seat belts for colored ones and what the cost was. My friend has a new 911 with red belts, looks slick. Great site btw!

like this?

Porsche Mesh Grill Kit 997 GT3 996 Boxster 986 911 Bumper or Side Intake Mesh | eBay

I have the homemade version in black, but check out the stainless mesh grills by zunsport, as advertised on ebay (from England). They look sharp, and a bit more classy than the average DIY version.

Putting mesh grills on the radiator intakes will significantly reduce the airflow and while it may keep the big pieces out of the radiators, it will not stop the sand and small stuff that will still clog the radiators. I think the long run, it will lessen cooling and did not significantly help in keeping the radiators clean.

If I recall, that ebay kit (the one in the link) is the same rain gutter material you can buy from Lowes. The mesh is not pre-cut to go over the vents.

Here's another vendor.
Porsche Boxster mesh grill radiator guards