Dust coming in bathroom

[Ste and Bre]

We have a 2010 FC FB. We live on a gravel road and coming home this weekend we found dust throughout the trailer. We travel about 2 1/2 miles on gravel to get home. I had my wife drive and I road in the trailer and it seems the dust is coming up through the cabinets in the rear bathroom. Any ideas on where to start lookin?. Rear window seems tight. Thanks

[AWCHIEF]

Just have to do some deep looking in and under cabinets and under the trailer. Especially where any plumbing or propane lines pass thru the floor or underbody. I use HVAC silver duct tape to close all the holes.

[RamblinManGa]

Hi from AZ. . . we had that problem in Alaska last year, & my AS tech admitted when he saw it that he had not gotten something sealed behind / above refrig when doing the solar /WIFI Ranger install. . . just F Y I , regards, Craig