I honestly wouldn't worry about it. I know what you're referring to, as some manufacturers (keystone, FR) do this on some models. Why I don't know. Our cedar creek had them. To me it's more of a sales gimic than actually doing any good. The RV roof is stuffed with batten and there is little to no air space between ceiling and roof / plywood like an attic has. The home attic has soffit vents then the ridge vent or whirly birds, air in, air out. No air in on the RV, just a hole in the roof where the vent is if you do this. If you pull one like on our cedar creek, you're staring at packed batten insulation, so there is no air flow. To me, there just isn't much logic behind it. Just another hole in the roof for something to go wrong.
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John and Rebecca Dickson
Emma-13 / Little John-10 / Iva-7
2013 Ford F-350 Lariat FX4, CC LB PSD, DRW
2015 Jayco Jay Flight 28BHBE (#8)
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