Skip to main content Skip to navigation

Class A motorhomes
Class C motorhomes
Class B vans
Fifth wheel trailers
Travel trailers
Pop-up campers
Advanced search
Floor plan wizard
Inventory

Browse popular layouts & features

Class A motorhomes

… with bunk beds
… with two bedrooms
… with bath and a half
… with two full bathrooms
… with bunk over cab
… with rear bathroom

Browse all features →

Class B vans

… with King size bed
… with rear twin beds
… with Murphy bed
… with rear bathroom
… with dual twin beds

Browse all features →

Class C motorhomes

… with bunk over cab
… with bunk beds
… with rear bathroom
… with rear twin beds
… with Murphy bed
… with outdoor kitchen
… with outdoor TV

Browse all features →

Fifth wheel trailers

… with bath and a half
… with two bathrooms
… with bunk beds
… with two bedrooms
… with side patio
… with rear patio
… with outdoor kitchen
… with washer/dryer
… with front living

Browse all features →

Travel trailers

… with bunk beds
… with two bedrooms
… with Murphy bed
… with outdoor kitchen
… with rear bath
… with front bedroom

Browse all features →

Popup campers

under $10k
under $15k
under 2,000 lbs
under 3,000 lbs

Browse all features →

RV dealers by metro area

Los Angeles Dallas–Fort Worth Houston Atlanta Phoenix Tampa Bay Orlando Denver Chicago Seattle Nashville Toronto Browse all metro areas →

Explore

RV floor plans
Browse inventory
Sell your RV
Dealers
Shopping tips

Company

About
Our story
Contact

Services

Dealer leads
Dealer websites & CRM
OEM advertising
Shopper insights

Join our mailing list

We don't send much, but you won't want to miss it!

Fax

The RV search engine. Find your dream RV.

We do our best to keep listing details accurate, but pricing, specifications, and availability come from third-party sources and can change without notice. We can't guarantee accuracy, so please confirm the details with the dealer before making any decisions. See something inaccurate? Contact us.

© 2026 RV Envy. All rights reserved.

For AI agentsPrivacy Terms

Cornerstone Series 6 645D by Tiffin for sale (1 available) | RV Envy

Home
Class A motorhomes
Tiffin
Cornerstone Series 6
645D
Inventory

Tiffin Cornerstone Series 6 645D exterior

Tiffin Cornerstone Series 6 645D for sale

1 unit for sale

Available inventory

Year	Status	Dealer	MSRP	Sale price
2027	new	A dealer in NY NY	Not listed	Not listed		Visit listing

A dealer in NY
2027·new
Not listed

Sign up to see 1 available unit

Email address

We'll email you a link to unlock pricing and dealer info. No password needed.

Tiffin Cornerstone Series 6 645D overview

Key facts

Length: 45 ft
Max weight: 54,000 lbs
Sleeps: 7

Specs

Dimensions

Length: 45 ft
Height: 13 ft 4 in
Width: 8 ft 5 in
Slideouts: 4
Axles: 3

Tanks & capacities

Fresh water: 96 gal
Gray water: 91 gal
Black water: 53 gal

Weight & towing

GVWR: 54,000 lbs

Accommodations

Sleeps: 7