Polar Package, Artic Package & 4 Season package are as big a misnomer as "Half To Towable", sounds good in the advertising.
As you stated those packages mean there's a closed underbelly with possibly a layer of foil bubble insulation & a duct from the furnace blowing into it.
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Full-timed 10+ years
Sold '13 Redwood FB
Traded '13 GMC Denali DRW D/A
Replacement undetermined
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