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2025 Grand Design Solitude 345GK
by Grand Design
Full Specifications
General Info
| Manufacturer | Grand Design |
| Country of Origin | USA |
| Year | 2025 |
| Category | Fifth Wheel |
| Subcategory | — |
Dimensions & Weight
| Length | 37 ft |
| Width | 8 ft |
| Height | 13.5 ft |
| Dry Weight | 10,000 lbs |
| GVWR | 13,900 lbs |
| Hitch Weight | 1,100 lbs |
| Cargo Capacity | 3,900 lbs |
Engine & Chassis
| Fuel Type | N/A |
| Engine | — |
| Chassis | — |
| Horsepower | — |
| Fuel Capacity | — |
Living & Off-Grid
| Sleeping Capacity | 4 |
| Slide-Outs | 1 |
| Awning Length | 17.5 ft |
| A/C | 15,000 BTU |
| Furnace | 20,000 BTU |
| Fridge | 10 cu ft residential |
| Fresh Water | 56 gal |
| Gray Water | 61 gal |
| Black Water | 40 gal |
| Solar | 200 W |
| Battery | 150 Ah |
| Inverter | 1,500 W |
About the 2025 Grand Design Solitude 345GK
Grand Design has engineered the 2025 2025 Grand Design Solitude 345GK for serious campers who want full-time livability in a towable format. The fifth wheel design provides inherent advantages in ceiling height, stability, and interior volume.
With an overall length of 37.0 feet, 8.0 feet wide and 13.5 feet in height, the 2025 Grand Design Solitude 345GK tips the scales at 10,000 pounds dry weight, and a gross vehicle weight rating of 13,900 pounds, offering 3,900 pounds for gear and supplies. Thanks to one slide-out, the interior transforms into a surprisingly roomy living space once deployed.
With room for 4 occupants to sleep, the 2025 Grand Design Solitude 345GK strikes a practical balance between living space and sleeping arrangements. During the day, the sleeping areas convert into usable seating and dining zones that make the interior feel open and inviting.
Off-grid capability is well supported thanks to 56 gallons of fresh water capacity, 61 gallons of gray water holding, a 40-gallon black water tank. Electrical independence comes via 200-watt solar charging capability, 150 amp-hours of battery storage, a 1500-watt inverter for household AC power. 15,000 BTU of air conditioning handles warm-weather comfort, while a 20,000 BTU furnace ensures warmth during cold nights. The kitchen features a 10 cu ft residential refrigerator for keeping provisions cold. A 17.5-foot awning extends your living space outdoors, providing shade and shelter.
With a dry weight of 10,000 lbs, you will need a properly rated tow vehicle. with 1,100 lbs of hitch weight to account for in your towing setup. The fully loaded GVWR of 13,900 lbs is the number to match against your tow vehicle's rating.
The $162,000 asking price places the 2025 Grand Design Solitude 345GK among the more refined options, delivering a notch above the typical Fifth Wheel experience in both materials and execution. Seasonal campers, extended travelers, and those with a dedicated truck for towing will find the 2025 Grand Design Solitude 345GK provides some of the best livable space per dollar in the entire RV market.
Looking at the complete picture, the 2025 2025 Grand Design Solitude 345GK delivers on the promise of quality RV living. It is the kind of rig that makes you excited to plan the next trip before the current one is even over, which is perhaps the highest compliment an RV can earn.
The 2025 Grand Design Solitude 345GK is a premium fifth wheel that delivers residential-quality living space with the freedom to travel wherever the road leads.
The bi-level floor plan spans 37 feet with 1 slide-out(s), creating distinct living zones for entertaining and relaxation. The raised bedroom suite features a king bed, dual nightstands, and a spacious wardrobe. The main level kitchen boasts a 10 cu ft residential refrigerator, pantry, and island with solid-surface countertops.
Premium construction includes a fully enclosed and heated underbelly, aluminum frame, and seamless TPO roof with limited lifetime warranty. At $162,000, the 2025 Grand Design Solitude 345GK delivers exceptional value for this level of quality and comfort.