Grasshopper Powervac Collection System

[lawn mower fanatic]

I read on GH website "An optional Air Dam Kit can be installed along the front edge of most mower decks to minimize dust and dirt escaping from the front of the mower." I've not heard of anyone trying one. Has anyone on forum seen one installed or know if successful in purpose?

There is not much online about them....I just saw it on the GH website, also. This is the best thing I could find.

It seems like GH is the only mower brand that offers this accessory!