01 What makes it unique
The 321BH is the top of the Delta line: a ‘BH’ bunkhouse with dual bunks, opening on two slide-outs in a 36-foot-11 body and sleeping seven — the largest, heaviest and most family-focused Delta. It is the plan for a bigger family that wants maximum sleeping and living space while staying a bumper-pull travel trailer rather than moving up to a fifth wheel, on a GVWR that sits at the top edge of half-ton-plus towing.
Every Delta rides a bumper-pull tandem-axle chassis with a walk-on seamless PVC roof, a double-insulated front wall, a heated and enclosed underbelly, 62 cubic feet of drop-frame pass-through storage, Goodyear Endurance tires with Counteract beads on aluminum rims with a spare, a MorRyde Step Above entry, electric auto-leveling, a 10-cubic-foot 12-volt refrigerator, a 400-watt solar package with a 30-amp MPPT controller, two air conditioners and two awnings. Alliance publishes a 10,450-pound GVWR against the 8,330-pound dry weight — the heaviest in the line — leaving a 2,120-pound cargo capacity and an 885-pound tongue, with a 45-gallon fresh tank and a 90-gallon grey tank. At a starting MSRP around $69,000, the priciest Delta with street pricing below placard, the 321BH is the flagship family Delta for buyers who want the most space and sleeping the line offers in a bumper-pull travel trailer, towed with a well-rated half-ton or a three-quarter-ton truck.
02 Full specifications
Dimensions
- Exterior length
- 36' 11"
- Exterior height
- 11' 3"
- Exterior width
- Not published by source
Weights
- Dry / unit base weight (UVW)
- 8,330 lbs
- GVWR (max loaded)
- 10,450 lbs
- Net cargo / payload (CCC)
- 2,120 lbs
- Dry tongue (hitch) weight
- 885 lbs
Capacities
- Fresh water
- 45 gal
- Grey water
- 90 gal
- Black water
- 45 gal
- Refrigerator
- 10 cu ft 12V
Construction
- Roof
- Walk-on seamless PVC covering
- Front wall
- Double-insulated
- Underbelly
- Heated & enclosed · 12V tank heaters
- Storage
- 62 cu ft drop-frame pass-through
Running gear
- Axles
- 2 (tandem)
- Hitch
- Bumper Pull (weight-distribution recommended)
- Tires
- Goodyear Endurance · Counteract beads · aluminum rims + spare
- Entry
- MorRyde Step Above with grab handle
- Leveling
- Electric auto-leveling
Galley & systems
- Refrigerator
- 10 cu ft 12-volt
- A/C
- 2 units
- Solar / electrical
- OTG 400W · 30A MPPT · 3,000W inverter prep
- Service
- 50-amp with detachable cord
Sleeping & layout
- Sleeps
- 7
- Slides
- 2
- Entries
- 1
- Awnings
- 2
Drawn to scale
Weight budget
Size (no width published)
Holding tanks
Axles, wheels and nose shape are schematic; not a floorplan. Data: dataset.
Towing it
Loaded range: 10–15% of GVWR on the tongue, a rule of thumb, not a measurement of this unit. No truck ratings or hitch classes (why; NHTSA, DOT HS 809 433).
03 The Delta floorplan family
Delta is Alliance RV's travel-trailer line — half-ton-friendly bumper-pull towables and a cross-shop against Grand Design's Imagine, Jayco's Jay Flight SLX, Forest River's Salem / Wildwood and Keystone's Passport. Seven floorplans are profiled in full and linked below; the remaining plans, including the new single-axle Delta Solo sub-line, are catalogued and shown muted. The 321BH on this page is highlighted.
| Floorplan | Nominal | Sleeps | Notable |
|---|---|---|---|
| ML166 | 19 ft | 3 | Delta Solo — weights not yet published |
| RB152 | 19 ft | 3 | Delta Solo rear bath (new 2026) |
| BH181 | 22 ft | 5 | Delta Solo entry bunkhouse (new 2026) |
| ML206 | 23 ft | 2 | Compact couples plan, lightest main Delta |
| ML226 | 26 ft | 3 | Compact plan (lighter half-ton) |
| RK234 | 27 ft | 3 | Rear kitchen (lighter half-ton) |
| 262RB | 29 ft | 3 | Rear bath, single slide |
| 252RL | 29 ft | 3 | Rear living |
| BH241 | 29 ft | 6 | Bunkhouse (lighter half-ton) |
| BH271 | 29 ft | 4 | Bunkhouse (lighter half-ton) |
| RE250 | 29 ft | 3 | Rear entertainment (lighter half-ton) |
| 274RKW | 31 ft | 3 | Rear kitchen |
| 281BH | 31 ft | 7 | Bunkhouse, dual entry, sleeps seven |
| 284RK | 32 ft | 4 | Rear kitchen |
| 292RL | 33 ft | 3 | Rear living, two slides |
| 294RK | 33 ft | 4 | Rear kitchen, two slides |
| 291BH | 34 ft | 7 | Bunkhouse |
| 321BH | 36 ft | 7 | Flagship bunkhouse, biggest, sleeps seven |
Delta is Alliance RV's travel-trailer line — the maker's move into lighter, half-ton-friendly bumper-pull towables, launched in July 2023, alongside a lighter Delta Ultra Lite and a new-for-2026 single-axle Delta Solo sub-line. The 2026 range runs to fifteen plans filed by RVUSA as Delta plus the Solo plans; seven floorplans are profiled here in full and the remaining plans are catalogued from published specifications below. Every Delta rides a bumper-pull tandem-axle chassis with a walk-on seamless PVC roof, a double-insulated front wall, a heated and enclosed underbelly with 12-volt tank heaters, 62 cubic feet of drop-frame pass-through storage, Goodyear Endurance tires with Counteract balancing beads on aluminum rims with a spare, a MorRyde Step Above entry, electric auto-leveling, a 10-cubic-foot 12-volt refrigerator and a 400-watt solar package with a 30-amp MPPT controller and 3,000-watt inverter prep on 50-amp service. Tongue weight, GVWR, dry weight and CCC are published per plan and each plan's dry weight plus CCC equals its GVWR exactly. Dry weight is a factory estimate; real loaded tongue weights run higher — always weigh the loaded trailer and confirm against your vehicle's tow rating and payload.
04 Notes on this floorplan
Flagship dual-bunk bunkhouse
The biggest Delta — dual bunks, two slides, sleeping seven — maximum family space in a bumper-pull trailer.
Heaviest, priciest Delta
At 8,330 pounds dry and a 10,450-pound GVWR it is the heaviest plan in the line, at the top of the price range.
Top-edge half-ton tow
A 10,450-pound GVWR and 885-pound tongue sit at the upper limit of half-ton-plus towing — a well-rated half-ton or a three-quarter-ton is the honest match.
Verify the tow vehicle honestly
Confirm your truck’s tow rating, payload and hitch class against the loaded weight, not the brochure figure — this is the heaviest Delta.
05 How it compares
Grand Design’s Imagine — the direct large-family travel-trailer cross-shop.
Forest River’s Salem and Wildwood — comparable big bunkhouse travel trailers.
Alliance’s entry fifth wheel — a mid-profile 5W bunkhouse for families ready to move from a travel trailer to a fifth wheel.
06 Loading it for a trip
A full 45-gallon fresh tank is about 375 lb of water (water counts as cargo: 49 CFR 571.120 S10.4.2), 18% of the 321BH’s 2,120 lb cargo capacity, leaving 1,745 lb (249 lb per rated berth). Across 7 Delta floorplans the water share runs 16% to 39%, and 5 give up more than this one. Nearest on that share: Delta ML206 at 16% and Delta 294RK at 20%. Your own unit’s figure is on the label inside its entry door (49 CFR 571.120 S10.4.3).
07 Where this floorplan sits
Closest sibling: the Delta 281BH, nearest on the published figures. It differs on 5 of the 9 fields both publish (this plan first): length 36 ft 11 in vs 31 ft 11 in; dry weight 8,330 lb vs 7,150 lb; GVWR 10,450 lb vs 8,850 lb; cargo capacity 2,120 lb vs 1,700 lb; dry hitch weight 885 lb vs 740 lb. They match on sleeps, fresh tank, grey tank and black tank.
| Delta plans | This plan | Position, low to high | Range |
|---|---|---|---|
| GVWR (lb) | 10,450 | 7 of 7 | 5,650–10,450 |
| Dry weight (lb) | 8,330 | 7 of 7 | 4,689–8,330 |
| Cargo capacity (lb) | 2,120 | 6 of 7 | 961–2,410 |
| Dry hitch weight (lb) | 885 | 6–7 of 7 | 580–885 |
| Length | 36 ft 11 in | 7 of 7 | 22 ft 11 in–36 ft 11 in |
| Grey tank (gal) | 90 | 3–7 of 7 | 45–90 |
| Black tank (gal) | 45 | 2–7 of 7 | 37–45 |
| Sleeps | 7 | 6–7 of 7 | 2–7 |
Either side of it by GVWR: Delta 292RL is 1,000 lb lighter (9,450 lb GVWR).
| Nearest Delta siblings | Length | Sleeps | Dry (lb) | GVWR (lb) | CCC (lb) | Hitch (lb) | Fresh (gal) |
|---|---|---|---|---|---|---|---|
| Delta 321BH | 36 ft 11 in | 7 | 8,330 | 10,450 | 2,120 | 885 | 45 |
| Delta 281BH | 31 ft 11 in | 7 | 7,150 | 8,850 | 1,700 | 740 | 45 |
| Delta 294RK | 33 ft 11 in | 4 | 7,360 | 9,250 | 1,890 | 885 | 45 |
| Delta 292RL | 33 ft 11 in | 3 | 7,850 | 9,450 | 1,600 | 790 | 45 |
| Delta 262RB | 29 ft 7 in | 3 | 6,600 | 8,250 | 1,650 | 720 | 45 |
| Delta ML206 | 23 ft 11 in | 2 | 5,040 | 7,450 | 2,410 | 580 | 45 |
All 7 Delta floorplans: Delta line hub.
| Other lines, nearest by GVWR | GVWR (lb) | Dry (lb) | Sleeps | Length |
|---|---|---|---|---|
| 321BH | 10,450 | 8,330 | 7 | 36 ft 11 in |
| Coachmen Catalina 343BHTS | 10,436 | 8,936 | 10 | 38 ft 1 in |
| Access 32BR | 10,400 | 8,008 | 8 | 37 ft 11 in |
| Coachmen Freedom Express Ultra Lite 320BHDS | 10,500 | 7,734 | 8 | 36 ft 10 in |
| Jay Flight 331BTS | 10,400 | 8,680 | 12 | 37 ft 10 in |
| Seismic 265 | 10,500 | 6,550 | — | 31 ft 6 in |
| Outback 328RL | 10,500 | 8,791 | 6 | 37 ft 7 in |
Against the 321BH: the Coachmen Catalina 343BHTS is 14 lb lighter and 1 ft longer and sleeps 3 more; the Access 32BR is 50 lb lighter and 1 ft longer and sleeps 1 more; the Coachmen Freedom Express Ultra Lite 320BHDS is 50 lb heavier and sleeps 1 more.
08 Common questions about the 321BH
How much does the 321BH weigh?
8,330 lb dry; 10,450 lb GVWR, the most it may weigh loaded.
How much can the 321BH carry?
2,120 lb, 20% of its GVWR (median across 958 travel trailers here: 23%). A full fresh tank uses 375 lb of it.
What is the tongue weight of the 321BH?
885 lb dry, 11% of the dry weight (median across 1,156 travel trailers here: 12%).
What size tow vehicle does the 321BH need?
A tow rating of at least 10,450 lb, plus payload for the loaded tongue weight, passengers and cargo.
How many people does the 321BH sleep?
It is rated to sleep 7. No other Delta floorplan here is rated for more.
What are the tank capacities on the 321BH?
Fresh 45, grey 90, black 45 gallons. Off hookups, fresh water runs out first.
How long is the 321BH?
36' 11" overall, tongue or pin box included.
From the figures above.
09 What this page publishes, and what it does not
16 of the 18 fields this catalogue tracks are published for the 321BH. Not published: exterior width, interior height, tire size (a description is published, a size is not).
Sourcing rules: methodology.
10 Manuals & documents
Sources: alliancerv.com (linked below); the full source note is at the foot of the page.
11 NHTSA safety record
NHTSA holds 2 owner complaints against the Delta line. They are counted separately: a recall is a confirmed defect with a remedy, a complaint one owner’s unverified account.
NHTSA holds no recall campaign against this line, and that is an answer rather than a gap: every query we put to NHTSA for it returned an explicit zero, not an error. A campaign can still be filed under a parent name, so check the VIN of the specific trailer.
Too few reports to show a pattern. 2 complaints have been filed on this line — not enough to say what fails most often. They cover equipment and unknown or other.
Recall coverage here is not complete, and complaints are owners’ unverified reports (how this record is built). Check a specific VIN at NHTSA before you buy. Full tables are on the Delta line page.