Plenty of brands use aluminum sidewalls. Very few run aluminum all the way around. The 2027 Flagstaff 403CDB uses a six-sided full-aluminum frame — sides, back wall, and the roof trusses — plus aluminum floor joists and aluminum under the dinette, the bed and the bunk. That last one you only notice as a bigger guy who’s put a knee on a one-inch pine bed platform and wondered.
It’s also a two-bedroom, two-full-bath fifth wheel that doesn’t sacrifice the living room to get there, which is the trap most dual-bedroom floorplans fall into. Here’s the walkthrough.
2027 Flagstaff 403CDB Specs
| Exterior Length | 41′ 0″ |
| Exterior Height | 13′ 5″ |
| Exterior Width | 100″ widebody |
| UVW | 12,824 lb |
| Cargo Carrying Capacity | 2,674 lb |
| Hitch (Pin) Weight | 2,190 lb |
| Fresh Water | 54 gal |
| Gray Water | 131 gal |
| Black Water | 92 gal |
| Awnings | 9′, 10′ & 15′ |
| Slide Outs | 4 |
| Floorplan | Two bedrooms, two full baths, kitchen island |
| Air Conditioning | Dual 15,000 BTU installed; third optional |
| Furnace | 35,000 BTU |
| Water Heater | 12 gal quick recovery auto-ignite gas/electric |
| Front Bedroom Ceiling | 80″ |
| Construction | 6-sided full-aluminum frame, complete composite walls, aluminum floor joists, aluminum dinette/bed/bunk |
| Roof | Fully laminated, walkable, with rear ladder |
| Suspension | CURT Slipper Roller axles, CURT Helux pin box |
| Tires | 16″ nitrogen-filled Goodyear Endurance with balancing beads, wheel-banded TPMS |
| Leveling | 6-point auto-leveling |
| Electrical | 50 amp, 200W solar with side port, Starlink prep |
| Cold Weather | 12V thermostat-controlled heated tanks, radiant foil underbelly, closed cell spray foam front cap |
| Propane | Dual 30 lb tanks |
| Rear Hitch | 2″ receiver, 3,000 lb tow rating |
Specs sourced from the manufacturer and subject to change. Individual units vary — always confirm the weight sticker on the actual unit before you buy.
What I Liked
The six-sided aluminum frame is the real story. Sides, back wall, and roof trusses all aluminum, plus aluminum floor joists. Most brands do sidewalls and stop there. Running it up top means less dead air space, better heating and cooling, and a roof that doesn’t flex when you walk it. Flagstaff also runs aluminum under the dinette, the bed and the bunk — where most builders use one-inch pine. As a 6’1″, 310-pound guy who’s knelt on a few of those, that’s not a small thing.
The table is the cleverest one I’ve seen this year. It starts as a desk or a two-top. Pull it, slide out a second section, then a leaf comes up and drops down — now it’s a table for four. A lot of brands are doing hideaway tables and most of them are fussy. This one is genuinely easy, and there’s a power tower in the corner so you can plug in while you eat.
Two full bathrooms, and both are usable. One-piece fiberglass showers in both, large linen storage in both, backlit mirrors, and enough head height that I wasn’t ducking. The rear bath is a bit larger, but the showers are close to the same size — meaning nobody gets the short straw.
The dual bedroom setup doesn’t kill the living room. This is the usual failure mode for two-bedroom floorplans, and Flagstaff avoided it. Four slides, dual theater seating with power recline facing a 50″ TV, a fireplace, and enough floor space to move around. The front bedroom even gets its own reading nook with a fireplace and seating — my wife would live in that corner.
Flip-up counter extension. Grab a clip, flip it up, and you’ve got a place to set food down while you’re cooking. Drop it back and you get your walkway back. Solid surface even on the underside, which nobody would ever see.
The Rockwood owner’s guide. Every unit ships with a VIN-specific guide showing your exact tank locations, voltage system, maintenance schedules and the numbers you’ll need. When you’re dumping and wondering which black tank feeds which bathroom, it’s right there. Small touch, genuinely useful.
131 gallons of gray and 92 of black. Enormous waste capacity for a two-bath coach. That’s the number that determines how long you can go, and Flagstaff sized it properly rather than treating the second bathroom as an afterthought.
Real towing hardware. CURT Helux pin box, CURT Slipper Roller axles, 16″ nitrogen-filled Goodyear Endurance tires with balancing beads, and a wheel-banded TPMS rather than the cheaper valve-stem kind. Six-point auto-leveling on top.
The mini drop frame. That’s what creates the tall pass-through storage bay, and there’s room to add a generator down there if you want one.
Details throughout. Soft-close roller bearing drawers, hidden cabinet hinges, frameless windows, MORryde strut assist steps, thicker upholstery material that resists cracking and peeling, and a 15K Coleman Mach with a Bluetooth speaker in the fan. Starlink prep comes standard.
What To Know Before You Buy
Fresh water is your limiter. 54 gallons fresh against 131 gray and 92 black. The waste capacity is outstanding, but with two bathrooms and two bedrooms full of people, 54 gallons goes fast. Plan on hookups or budget for a portable tank if you like to sit for a few days.
The TV lift button is in an odd spot. It’s tucked behind the unit rather than somewhere obvious. If that’s the worst problem in a coach, you’re doing well — but you’ll hunt for it the first dozen times.
Check the Rockwood equivalent. Rockwood builds a comparable model that’s essentially the same coach with a different badge on the front cap. Worth pricing both at your dealer before you decide, since availability and incentives can differ.
Who This RV Is For
Two couples traveling together. Two bedrooms, two full baths, and a living room big enough that four adults aren’t stacked on top of each other. That combination is rare and this floorplan nails it.
Families with older kids. Teenagers with their own bedroom and their own bathroom is worth a great deal on a two-week trip.
Buyers who care about construction. If you’ve been shopping and asking what’s actually inside the walls, this is one of the few coaches where the answer is genuinely different from the rest of the lot.
Full-timers who want a second bedroom as an office. The front bedroom with its reading nook, fireplace and seating works as a study when nobody’s visiting.
Who Should Skip It
- Couples who don’t host — you’re towing 41 feet for a second bedroom you’d use as storage.
- Long-stay dry campers — 54 gallons of fresh is the constraint, not the tanks.
- Anyone wanting a rear living layout — both ends of this coach are bedrooms.
- Small-park campers — 41 feet and 100 inches wide rules out some older sites.
Frequently Asked Questions
What truck do I need for the Flagstaff 403CDB?
Dry pin weight is 2,190 lb on a 12,824 lb coach, and the pin climbs once you load it. Rather than going by truck class, pull the payload sticker on your door jamb and subtract passengers, fuel, your hitch and anything in the bed. Payload is what limits you on a fifth wheel, not tow rating. Your dealer can run the math with you.
What does six-sided aluminum framing actually do?
Aluminum in the sides, back wall and roof trusses means less dead air space in the structure, which improves heating and cooling efficiency. It also means a stiffer roof you can walk without flex, and it doesn’t rot if moisture ever gets in. Most brands use aluminum sidewalls and wood trusses.
Does it really have two full bathrooms?
Yes. Both have one-piece fiberglass showers and large linen storage. The rear bath is somewhat larger, but the showers are close to the same size.
How many people does it sleep?
Two bedrooms with beds at both ends, plus the front bedroom’s daybed and window seat. It’s built for two couples or a family with older kids rather than for bunk-bed sleeping.
Is there a Rockwood version?
Yes. Rockwood offers a comparable model built to the same design. Worth checking both at your dealer.
What’s included for off-grid use?
200W of solar with an additional side port, 50 amp service, Starlink prep and a Wi-Fi-prepped omnidirectional antenna. There’s an optional Power Package with lithium batteries and additional solar if you want to build it out further.