Roof air ducts

[lhill]

I was testing my roof airconditioners today and was surprised to find that all the ceiling air outlets on the passenger side of the coach are blocked with some kind of gray colored stuff that looks just like the a/c dust filter material. No air from passenger side ceiling ducts. Is this from Newmar or was someone trying to increase the airflow from the driver side ducts for whatever reason?

["007"]

They are the air filters to keep dust out of your passenger return side to your AC's..
You can clean them by inserting fingers in vent slot and pull down vent while turning back and forth and grill will pop out.
Scrool down on this link fined out how to clean your AC and clean your vent filters.

[GaryKD]

Hi lhill,
Expanding on 007's post, all the passenger side openings are for the air return. All the driver's side openings are the delivery side of the roof ac or heat pumps.

[lhill]

Well I'll be darned........Thanks!!