CamperHardlyKnowHer

Dynamax DX3 37BH

Class Cbuilt 2013–21Better build tierFindable on the used market
WHAT ONE COSTS
—price not published

The maker never published an MSRP for this floorplan. Unknown is not cheap — treat any asking price against comparable models, not against zero.

THE SPECS
Length39.2 ft
Height (incl. A/C)12.8 ft
Width8.4 ft
Interior height7.0 ft
GVWR33,000 lb
Dry weightnot published
Sleeps6
Slide-outs2
Fresh water94 gal
Grey water52 gal
Black water52 gal
Air conditioning30,000 BTU
Awning13.5 ft
Fuel100 gal
Generator8 kW Onan diesel

A missing row means the maker never published that figure — unknown, not zero.

WHERE PEOPLE SLEEP
  • 1× Rear bedroom king bed(Permanent)—
  • 2× Bunk beds(Permanent)—
  • 1× Sofa(Convertible)—
HOW IT'S BUILT — 4/5
WallsAzdel composite
FrameAluminum
RoofStandard
UnderbellyEnclosed

Dynamax (Better tier): Forest River

YEAR BY YEAR — WHAT CHANGED
YEARSGVWRDRYMSRP
2013–1426,000 lb——
2017–1833,000 lb——
2019–2133,000 lb——
  • 2013Introduced with the DX3 at 26,000 lb GVWR and 12'5" height
  • 2017Freightliner M2 106 with 33,000 lb GVWR; height 12'9"
  • 2019Fresh water 96.5 to 94 gal
  • 2021Final year, sold as dealer stock only alongside the new 37BD
FINDING ONE

Findable — a few listed nationwide most weeks. Why: 9-year production run. Estimated from build volume and production span — not a count of live listings.

THE READ

The original DX3 bunk model, sold from the line's first year until the 37BD replaced it.

OTHER DX3 FLOORPLANS
32KD · 33,000 lb · sleeps 434KD · 33,000 lb · sleeps 635DS · 33,000 lb · sleeps 436FK · 33,000 lb · sleeps 437BD · 33,000 lb · sleeps 637RB · 33,000 lb · sleeps 637TRS · 26,000 lb · sleeps 637TS · 33,000 lb · sleeps 6the whole line →
Is the 37BH your #1 — or just a spec sheet?

These are the facts. Whether it beats the other six thousand rigs for you depends on what you care about — set your priorities as sliders and watch the whole market re-rank around them. Nothing gets hidden, everything gets explained.

Rank it against your setup →

Data compiled from dealer and aggregator listings, retrieved 2026-07.