If it's cold out, it's condensation. Warm, moist air on the inside collided with cold air on the outside. Similar to what causes mattress mold issues
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Fulltimer Domicile: Florida SKP Resort, Wauchula, Florida
2016 Montana 3611 RL Legacy - 2000w Solar, Victron whole house power, 1200ah Chins LiFePO4, RV Armor roof, Verizon 5G Home Internet
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