Depending on the RV some have enclosed underbellies and some of those have a heat vent going to them to help keep the bottom warm they can be used to the lot 20's but since you are using a Mr Buddy it will not heat the underside... so the coldest I would use the RV would be if the overnight low did not go below 28 and the daytime highs were above freezing.
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Seann
2004 Chev Silverado Duramax optioned past the max. 2009 Jayco Eagle 308 RLS 900watts of solar, Lithium batteries (400amp hour), 2000 watt (4000 surge) whole house inverter.
145days /2023 2022/151 2021[/COLOR]
93/2020,157/2019219/2018 206/2017,215/2016, 211/2015, 196/14, 247/13, 193/12
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