01 What makes it unique
The Imagine 3210BH is the largest and most fully-equipped trailer in the Imagine line — the family flagship. At 36 feet 11 inches it pairs quad bunks with a kitchen island, dual slide-outs and a walk-through bath that separates the rear bunk room from the front bedroom. It's a trailer designed for big families who travel often and want a genuine second home rather than a weekend rig, with room for everyone and proper separation between the kids' space and the parents'.
It carries the complete flagship build — laminated aluminum-framed walls over a gel-coated fiberglass exterior with foam insulation, a one-piece roof membrane, a heated and enclosed underbelly, MorRyde CRE-3000 rubber suspension and insulated slam-latch baggage doors — plus the largest holding capacity of the group, with a 90-gallon grey tank and dual awnings. Ducted 15,000-BTU air conditioning keeps the long floorplan comfortable.
The trade for all that space is weight and payload: at 8,725 pounds dry it's the heaviest plan here, and its 1,470-pound payload, while workable, is modest relative to its size — a trailer to load thoughtfully. It needs a capable tow vehicle and a full-size site. But for a large family that wants the most living space and separation Grand Design's Imagine line offers, at an MSRP in the low-$70,000s, the 3210BH is the flagship's flagship.
02 Full specifications
Dimensions
- Exterior length
- 36' 11"
- Exterior width
- 8' 0"
- Exterior height
- 11' 3"
- Interior height
- 6' 9"
Weights
- Dry / unit base weight
- 8,725 lbs
- GVWR (max loaded)
- 10,195 lbs
- Net cargo / payload
- 1,470 lbs
- Hitch / tongue weight
- 991 lbs
Capacities
- Fresh water
- 45 gal
- Grey water
- 90 gal
- Black water
- 45 gal
- Refrigerator
- 10 cu ft
Construction
- Frame
- Laminated aluminum-framed · R-7
- Roof
- One-piece membrane · ltd lifetime
- Underbelly
- Heated & enclosed · suspended tanks
- Body
- Gel-coated fiberglass · laminated
Running gear
- Axles
- 2 (tandem)
- Hitch
- Bumper Pull
- Suspension
- MorRyde CRE-3000 rubber
- Awnings
- 2
Galley & bath
- Cooktop
- 3-burner recessed
- Refrigerator
- 10 cu ft 12V
- A/C
- 15,000 BTU ducted
- Water heater
- Tankless / gas-electric
Sleeping & layout
- Sleeps
- 8
- Primary bed
- Front walk-around queen
- Layout
- Front bedroom, quad bunks, island kitchen, walk-through bath, dual slides
- Awnings
- 2
03 Imagine floorplan family
Grand Design's Imagine family — the premium-mainstream volume leader and the industry's perennial owner-satisfaction front-runner. It spans three sub-lines: the lightweight Imagine AIM, the medium-duty Imagine XLS (standard rooftop solar), and the residential flagship Imagine. The 3210BH on this page is highlighted; each other profiled plan links to its own page. The full family runs more than thirty floorplans; the highest-demand layouts across XLS and the flagship line are detailed here and the rest are catalogued on the line hub.
| Floorplan | Line | Nominal | Sleeps | Notable |
|---|---|---|---|---|
| 17MKE | XLS | 22 ft | 4 | Compact Murphy-bed couples coach |
| 22RBE | XLS | 26 ft | 4 | Rear-bath private-bedroom couples |
| 25RLE | XLS | 30 ft | 3 | Rear-living couples coach, two doors |
| 25DBE | XLS | 30 ft | 7 | Double-bunkhouse family |
| 2500RL | Imagine | 30 ft | 6 | Flagship rear-living couples |
| 2670MK | Imagine | 32 ft | 6 | Rear mid-kitchen, dual slide |
| 2800BH | Imagine | 32 ft | 10 | Flagship bunkhouse, sleeps 10 |
| 3210BH | Imagine | 37 ft | 8 | Quad-bunk family flagship |
Imagine XLS floorplans carry a standard 200-watt rooftop solar package, a 30-amp charge controller and a 10-cubic-foot 12-volt refrigerator; the flagship Imagine line adds MorRyde CRE-3000 rubber suspension and larger holding tanks. Lengths, weights and equipment can change with options and model year — always confirm against the unit's own weight sticker. Additional XLS, flagship and AIM floorplans are documented on the line hub.
04 What owners & reviewers report
Quad bunks and walk-through bath
Four bunks plus a walk-through bath separating the bunk room from the front bedroom give big families real space and privacy.
Largest, most equipped Imagine
At nearly 37 feet with dual slides, a kitchen island, a 90-gallon grey tank and dual awnings, it's the most complete trailer in the line.
Full flagship four-season build
MorRyde suspension, ducted A/C and the heated enclosed underbelly make it capable of extended stays in varied conditions.
Heavy, and load with care
At 8,725 lb dry it's the heaviest here, and 1,470 lb of payload is modest for its size — needs a capable truck and thoughtful loading.
05 How it compares
The 32-foot bunkhouse sleeping ten with far more payload — easier to tow and place, and cheaper.
The next line up — larger five-wheel and half-ton family trailers for full-timers.
The value alternative at this size — much cheaper and lighter, with less finish and capacity.