[Donzi]

my 02 has two filters that are at the back of the entrance steps coming into the coach.  

no filters at the units themselves.  there is a relatively large plenum in the bay of the coach that connects the area where the filters are under the steps to the aircon units.  

the filters are held in place in mine with stainless rods that are slipped through the green filter medium that is custom cut to fit the openings

i bought the filter media at the local hardware store

tom

Sorry for the slow response.......been getting the coach ready for tomorrows departure to Colorado. I can't believe I didn't think of looking under the steps  !
Thanks....I will go take a peak now to try to find them. Have a great weekend.