The Rossmönster Havn was created to solve a common challenge: more interior space without the extreme off-road build of the Baja series. Designed for those chasing adventure on dirt roads and trailheads in spacious luxury.
Welcome to the Great Indoors.
A lounge that stays a lounge
The back of the Havn is a proper seating area, not a bed you have to put away to use the room. The queen-size murphy bed folds up into the wall, and what is left is a lounge with 270 degrees of glass around it.
Rear double seats are mounted on L-track, so the layout can change with what you carry.
A real bathroom, not a compromise
A full wet bath with a sink, an exterior vent, and a Thetford cassette toilet. Hot water comes from a diesel-fired system, so the shower does not depend on sun or shore power.
There is an exterior hot water shower as well, for everything you would rather not bring inside.
Windows on three sides
The rear of the Havn wraps in glass, with integrated blackout covers and bug screens when you want the room closed down. An overhead skylight brings light in from above.
Front seating converts and pairs with the Lagun table, so the whole van works as one space.
Want to see the Havn on the road?
Follow our YouTube for build stories and trip footage from the Havn, or dig into the back catalog for the engineering problems we have already worked through. Ross, Luke, Theo, and the whole crew, building and testing these things for real.
Built to go, and to stay.
Our largest cold storage setup
A 220L refrigerator and freezer, alongside a dual induction cooktop, a Breville microwave that also air fries and bakes, and a deep sink with a folding faucet.
Enough to provision for weeks rather than days.
A composite sandwich, end to end
Outer and inner skins of fiberglass-reinforced polymer over a high-density EPS foam core: lightweight, rigid, and thermally efficient. Walls, roof, and floor are all the same sandwich.
There is no wood framing anywhere. Floors use a composite fiberboard rather than plywood, and the 2-inch wall panel system carries roughly R10 insulation.
Off-grid without rationing
1000 amp hours of lithium, an 880 W walkable solar array, a 3000 W inverter, and a secondary alternator that charges while you drive.
45 gallons of fresh water, hydronic in-floor radiant heat, and four-season insulation, so winter is a season rather than an obstacle.
More Room. Same Footprint.
Offered through our dealer network, the Havn is built to be repeatable, which means faster delivery times and stronger resale value than a fully custom van. A new kind of Rossmönster build, designed for versatility and ready for wherever the road leads.
Customize Your Own
Every Havn leaves the shop ready for four-season, off-grid travel — super singles, watertight garage, molle panels and storage cabinets are all standard. The options below are what you add on top, and the real configuration conversation happens with a person, not a checkbox.
CAtuned Off-Road Bumper
Front-end armor, with the winch mount and recovery points built in.
Flatline Van Rear Storage Box
Sealed exterior storage for the gear you would rather not bring inside.
Warn VR Evo 12-S Winch
The way out when you've pushed one obstacle too far.
Infinity Shower
Take all the time in the world with the re-circulating hot shower, on less than a gallon of water.
Rooftop Tent
A second sleeping area up top, taking the Havn to five.
HQ Pick-Up & Hand-Off
Meet the team who built the rig, plus all your questions answered on the spot.
2027 Havn Specs
Here is how the Havn measures up.
Chassis
- 3500 AWD chassis
- Diesel powertrain
- Composite camper shell
Selections
Warranty
- 3-year / 36,000 mile Limited Rossmönster
- 5-year / 100,000 mile Federal Diesel*
- 5-year / 100,000 mile Limited Powertrain
Havn Floorplan
Interior
- Paperstone (Slate) countertops
- White walls and ceiling
- White oak cabinets
- Queen-size murphy bed
- Swivel rear bench seat for 2
- 16" × 21" sink
- Upper and lower cabinet storage
- Table with Lagun mounting system
- 45-gallon freshwater
- Integrated and blackout window covers
- Overhead skylight
- Flat screen TV
- Exhaust fan
- Four season insulation
- Hydronic heat
- Hydronic in-floor heat
Kitchen
- Refrigerator / freezer
- Microwave
- Induction cooktop
- Sink with folding faucet
Bath
- Vented / heated shower room
- Thetford cassette toilet (5 gal)
- Exterior shower
- Diesel fired on demand hot water
Energy System
- 120V air conditioner
- 880 W solar array
- 1000 Ah lithium
- 3000 W inverter
- Digital control panel
Safety
- Smoke / CO detector
- Fire extinguisher
Exterior
- Electric awning
- Fresh water connection
- Heavy duty shore power inlet
- 24-gallon grey water (16 exterior, 8 interior)
Havn Features
- Adjustable suspension upgrade
- Super single conversion
- Super single wheels
- Spare tire with carrier
- Rear molle panels
- Exterior storage cabinets
- Rear watertight garage
- Starlink Mini wire prep
Measurements
Shell Construction
- Composite sandwich: fiberglass-reinforced polymer skins over a high-density EPS foam core
- Walls, roof and floor are all the same sandwich
- No wood framing anywhere; floors use composite fiberboard, not plywood
- 2-inch wall panel system, roughly R10 insulation

