CamperHardlyKnowHer

Entegra Coach Cornerstone 45B

Class Abuilt 2015–26Better build tierPatient search on the used market
WHAT ONE COSTS
$778,900est. used (2026, 1 yr old)

Sticker was $985,980 in 2026 — out of production since 2026, so the used market is the only way to buy one. Estimate assumes a 2026 unit.

THE SPECS
Length44.9 ft
Height (incl. A/C)12.9 ft
Width8.4 ft
Interior height7.0 ft
GVWR54,000 lb
Dry weightnot published
Sleeps4
Slide-outs4
Fresh water100 gal
Grey water62 gal
Black water41 gal
Air conditioning45,000 BTU
Solar (standard)400 W
Fuel175 gal
Engine / chassisCummins X15 605 HP diesel pusher / Allison 4000 MH / Spartan K3
GeneratorOnan 12,500W diesel with auto-start

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

WHERE PEOPLE SLEEP
  • 1× Walk-around king in rear bedroom(Permanent)72×80
  • 1× 100 in. power reclining sofa (hide-a-bed optional)(Convertible)—
HOW IT'S BUILT — 4/5
WallsLaminated fiberglass
FrameAluminum
RoofWalk-on
UnderbellyEnclosed

Entegra Coach (Better tier): Thor Industries (Jayco / Entegra Coach, Middlebury IN)

YEAR BY YEAR — WHAT CHANGED
YEARSGVWRDRYMSRP
201554,000 lb—$609,281
2016–2654,000 lb—$985,980
  • 2015Introduced
  • 2016Tanks revised from 95/49/49 to 100/62/41 gal
  • 2022Front cap restyle; catalog length briefly listed 45'5"
  • 2025Fuel tank 150 -> 175 gal
  • 2026Final Entegra-built model year; name moves to Tiffin for MY2027
FINDING ONE

Patient search — weeks of watching, and probably some travel. Why: 12-year production run; priced at the top of its maker’s range. Estimated from build volume and production span — not a count of live listings.

THE READ

The longest-running Cornerstone plan - couples bath-and-a-half with outdoor entertainment centre.

OTHER CORNERSTONE FLOORPLANS
45A · 54,000 lb · sleeps 645D · 54,000 lb · sleeps 445F · 54,000 lb · sleeps 645J · 54,000 lb · sleeps 645K · 54,000 lb · sleeps 645R · 54,000 lb · sleeps 745V · 54,000 lb · sleeps 445W · 54,000 lb · sleeps 445X · 54,000 lb · sleeps 745Y · 54,000 lb · sleeps 445Z · 54,000 lb · sleeps 4the whole line →
Is the 45B 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 manufacturer spec sheets, retrieved 2026-07.