CamperHardlyKnowHer

Dynamax DX3 36FK

Class Cbuilt 2015–18Better build tierPatient search 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
Length36.7 ft
Height (incl. A/C)12.8 ft
Width8.4 ft
Interior height7.0 ft
GVWR33,000 lb
Dry weightnot published
Sleeps4
Slide-outs2
Fresh water90 gal
Grey water52 gal
Black water52 gal
Air conditioning15,000 BTU
Awning18 ft
Fuel100 gal
Engine / chassisCummins ISL 8.9L turbo diesel on Freightliner M2 106, Allison 3200 TRV

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

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

Dynamax (Better tier): Forest River

YEAR BY YEAR — WHAT CHANGED
  • 2015Introduced
  • 2019Dropped, effectively replaced by the 34KD
FINDING ONE

Patient search — weeks of watching, and probably some travel. Estimated from build volume and production span — not a count of live listings.

THE READ

Front-kitchen DX3 - the layout that became the 34KD when the line was refreshed for 2019.

OTHER DX3 FLOORPLANS
32KD · 33,000 lb · sleeps 434KD · 33,000 lb · sleeps 635DS · 33,000 lb · sleeps 437BD · 33,000 lb · sleeps 637BH · 33,000 lb · sleeps 637RB · 33,000 lb · sleeps 637TRS · 26,000 lb · sleeps 637TS · 33,000 lb · sleeps 6the whole line →
Is the 36FK 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.