Those "dessicant containers" will collect moisture, but remember that they can not hold more water than the size of the container, so, if it's a 1 pint container, it can only hold 2 cups of water. Also keep in mind that moisture is "hygroscopic" which means that the water moves freely within the atmosphere. Sort of like wetting one end of a sponge. The other end will be wet within a few minutes. So, leaving a roof vent open and "collecting moisture in a tub" will hasten filling the tub as you attempt to dry the air coming through the roof vent..... Sort of like the sponge, you'll never stop the influx of water through the open vent..... The drier the air in the RV, the more water that will move though the open vent, into the RV, to equalize the humidity inside and out.....
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John
2015 F250 6.7l 4x4
2014 Cougar X Lite 27RKS
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