this yet another tragic occurance that need not be. before these plastic vents were aluminum frames and doors that, though not perfect, at least had a lip on the inside edge to prevent water intrusion. fast forward to the present and both norcold and dometic make similar frames with no interior lip to prevent water on the perimeter from entering the compartment. now a manufacturer must seal area somehow to prevent water damage. I just build a big ledge to divert water back out. its a bad design by both dometic and norcold IMO and virtually every coach made for years is suseptible...