Passenger compartment air filter
Race Director
Joined: Nov 2000
Posts: 10,339
Likes: 664
From: Beverly Hills (Pine Ridge) Florida
Plasticman
Le Mans Master
Joined: May 2005
Posts: 6,366
Likes: 249
From: Fort Lauderdale, Florida
Some of the major parts vendors sell a pre-cut piece of foam that goes in the cowl area and covers the vent slots. It doesn't actually filter the interior air, but it does keep small junk like leaves and dirt from getting into your ventilation system.
