2026 Alliance RV Delta321BH

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.

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.

This floorplan carries its water comfortably. A full 45-gallon fresh tank is roughly 18% of the 2,120-pound cargo capacity, leaving the 321BH with a usable gear budget even when you tow full.

The published dry tongue weight of 885 pounds is 11% of the 8,330-pound dry weight, which sits inside the 10–15% band usually quoted for stable towing. It is still a dry figure: loading the front pass-through and the fresh tank both push it up.

Nothing above changes the ceiling. Loaded to its 10,450-pound GVWR the 321BH is towing 2,120 pounds more than its 8,330-pound dry figure, and that is the number your vehicle has to be rated for — not the brochure weight.

Tank balance is generous here: 45 gallons of fresh against 90 grey and 45 black, so waste capacity keeps pace with supply and the fresh tank is the constraint that ends a dry stay.

Of the 7 Delta floorplans profiled here, the 321BH carries the highest GVWR at 10,450 pounds. It is the top of the line by weight, which makes tow-vehicle capability the first thing to settle rather than the last.

Either side of it in the same line: Delta 292RL is 1,000 pounds lighter at 9,450 lb GVWR.

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. Those are differences in the published numbers only — what they cost, how they are built and how they live are separate questions each of those pages answers on its own terms.

Those are the nearest travel trailers from other lines by weight — one per line, picked by proximity on that figure and nothing else. They are listed so the same tow vehicle can be checked against real alternatives, not because they are equivalent inside; layout, build and price diverge sharply across that group.

For scale, the Delta floorplans profiled here run 4,689 to 8,330 pounds dry and 23 to 37 feet of exterior length across 7 plans. Where a floorplan falls in that spread usually says more about which vehicle can tow it, and which site it fits, than the layout name does.

Every profiled floorplan in this line, with the full weight table, is on the Delta line hub.

This catalog tracks 18 specification fields per floorplan. Named sources publish 16 of them for the 321BH. The rest are not shown, because the alternative is reading a figure across from a sibling floorplan or from what the segment usually does — and a number nobody published is worth less than an admitted gap.

Not published for this floorplan: exterior width, interior height, tire size (a tire description is published, a size is not). If you find one of these in a manufacturer document for this plan, it belongs on this page.

The completeness figure at the foot of this page (92%) measures the same thing on the full field set: it is a measurement of how much this floorplan’s manufacturer publishes, not of how much research went into the page.

How every figure here was sourced and checked is set out on the methodology page.