Our rig is older and has the old style windows. I caulked around the perimeter of the flange so it sealed between the edge of the flange to the surface of the wall. Not sure how to seal the newer style windows that have the frameless construction, if that is what is leaking.
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Bob & Becky
2012 3402RL
2012 Chevy 2500HD D/A CC 4WD
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