RV Details
- Year: 2021
- Model: SOLITUDE 378MBS
- Listing ID: 6975439
- Partner ID: 5037776838
- Posted On: Sep 16, 2025
- Updated On: Feb 10, 2026
Description
2021 Grand Design Solitude 378MBS $52,500 OBO
Bend, Oregon | Clean Title in Hand | Delivery Negotiable | Pet-Free & Smoke-Free
Hi, we are selling our 2021 Grand Design Solitude 378MBS, a fifth wheel that has been our family's amazing home away from home. Our RV has been a very reliable and comfortable RV for our family outdoor adventures. The Solitude 378MBS is one of Grand Designs most sought-after floorplans for good reason. With four slide-outs, a mid-bunk room, residential finishes, and premium upgrades, its perfect for summer time travels or full-time living. We've maintained it meticulously and just had it professionally inspected by a certified Grand Design service center, earning a clean bill of health.
Highlights & Key Features
Spacious open living area with dual opposing slides provides plenty of space for family's to hang out
Luxury seating: Heated and massaging recliners with USB ports, plus a four-seat sofa that converts into a queen+ sleeper
Hidden 55" smart TV on Televator: Pops up for movie night, disappears for more space
Mid-bunk room: Sliding barn doors, desk, upper bunk, and flexible lower space great for a kids room or home office
An RV kitchen that feels like home:
Large island with solid-surface countertops
A long coffee bar counter space (we used for our Berkey and large countertop appliances)
Residential 4-burner oven & microwave
Large propane/electric fridge
Upgraded with a dishwasher
Spacious pantry and plenty of cabinet space
Dining area: Seats 4 comfortably.
Full-size bath: Oversized residential shower with massaging spray head and porcelain toilet.
King master suite: Upgraded Brooklyn Bedding mattress, large closet, under-bed storage, dresser/desk combo (added for another work space to use), and a stackable washer & dryer.
Pet-free and non-smoking since day one
Exterior Features
Dual electric awnings with LED lighting
Outdoor fridge and grill top
Outdoor speakers
Massive pass-through storage compartment plus more storage in front of the RV
Electric power cord reel
Premium Upgrades & Extras
Cummins Onan 5500 LP Generator (factory installed)
Double-pane windows for better insulation and soundproofing
Auto-leveling
Washer and Dryer
Slide toppers