2022 Grand Design Solitude 378MBS For Sale in Green Bay, WI
2022 Grand Design Solitude 378MBS 40' 2'' Fifth Wheel. Cummins 400HP Engine, 4 Slide Outs, 2 Awnings, Sleeps 7, 3 A/C Units.
Step into residential-style luxury with the 2022 Grand Design Solitude 378MBS. This highly desirable mid-bunk floor plan combines a spacious rear living room, private secondary room, gourmet kitchen, and luxurious master suite, making it an exceptional choice for extended stays, entertaining, or family adventures.
The rear living area features reclining theater seating with integrated heat and massage, a fireplace, and a large LED TV on a motorized televator that rises behind the rear window. Panoramic windows fill the room with natural light while multiple slide-outs create an exceptionally open feel.
The updated gourmet kitchen features a large center island, four-burner Insignia cooktop and oven, residential-size side-by-side refrigerator/freezer, generous cabinetry, and a convenient walk-in pantry.
The versatile mid-bunk room serves as a private guest suite, office, lounge, or additional sleeping area. It includes a tri-fold sleeper sofa and storage wardrobe, while the open ceiling design provides an airy feel.
The master suite features a king-size bed, deep walk-in closet with washer/dryer prep plumbing, abundant storage, and residential-style appointments. A central vacuum system adds convenience throughout.
Powering your adventures is an Onan 5,500-watt generator, complemented by the factory solar package with a 300W solar panel, 30-amp controller, and 2,000W pure sine-wave inverter.
Built for serious travel, the Solitude rides on a Lippert Z-rated double-stacked I-beam frame, heavy-duty steel cage structure, fully painted automotive front cap, upgraded 8,000-lb axles, 17.5" H-rated tires, MorRyde Kingpin, and 6-point automatic hydraulic leveling.
For four-season comfort, the Weather-Tek Arctic Package provides a fully enclosed and heated underbelly, R-45 main floor, R-40 roof, R-11 laminated sidewalls, and heated holding-tank protection. Dual 15,000 BTU A/C systems provide 30,000 BTUs of cooling, while the 35,000 BTU furnace keeps things comfortable in colder weather.
Exceptionally well cared for and ready for its next adventure! This Solitude has been kept in covered winter storage, helping protect it from the elements when not in use. All maintenance records are available, providing valuable documentation of its care and service history.
With premium construction, exceptional storage, versatile living space, and residential amenities, this 2021 Grand Design Solitude 378MBS delivers the comfort and capability expected from Grand Designâs flagship fifth-wheel lineup.

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Once you've narrowed down your RV search, we recommend considering a 3rd party inspection of the unit. This will allow you to set eyes on the vehicle and determine it's mechanical condition, without ever having to leave home.
We recommend Premier RV Inspections. They work with qualified inspectors nationwide who will come out to the rig's location, review the condition, and send over a full report--including photos!
An RV warranty, like those offered by Wholesale Warranties, will step in to pay for these costly repairs. From your engine and transmission down to your leveling jacks, slide-outs, and appliances, these policies will take care of the repair bill, and get you back on the road where you belong! Click here to learn more about RV protection.