Sportsmobile built the ProMaster RB 112s around insulation in a way most Class B conversions skip entirely, layering cork underlayment, wool-lined walls and ceiling, radiant barrier foil, and magnetic arctic panels for the windshield and doors into a van that handles genuine four-season use. The galley is modest but functional, with a Norcold 12V refrigerator, pull-out faucet sink, 10-gallon fresh water tank, and city water hookup already plumbed in. A 3,000-watt true sine inverter charger and a smart MPPT solar controller with Bluetooth monitoring handle the electrical side, so you're not dependent on shore power. The ProMaster chassis earns points for easy maneuverability and a tight turning radius, making the Sportsmobile ProMaster RB 112s a genuinely livable rig that punches well above its footprint in cold-weather readiness.
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Class b motorhomes that share features with the Promaster RB 112s, like chassis ram.
