2018 Cornerstone


You deserve the ultimate luxury—and that’s exactly what the Cornerstone delivers. With power, opulence and new features such as passive tag axle steering, Collision Mitigation, and electronic stability control, you’ll quickly see how it’s easy to revel in luxury in this motorcoach.

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Ward = wardrobe

Lav = bathroom sink

Med = medicine cabinet

Ohc = overhead cabinets

Fridge = refrigerator

Micro = microwave

Exterior Graphics

Standards & Options


Air Connection Remote air connection
Air Leveling Hadley air leveling system
Alternator 210-amp alternator
Braking System All-wheel ABS disc brakes
Chassis Spartan K3 raised rail chassis
Chassis Battery Chassis batteries (2) 12 volt
DEF Tank Dual DEF fill 15 gallon
Engine Cummins 15 liter ISX turbocharged 605HP engine 1,950 lb. ft. torque at 1,200 RPM
Engine Block Heater 1,500 watt engine block heater
Engine Brake Three-stage engine brake
Front Axle Reyco Granning IFS independent 20,000 lb front axle and air suspension
Front Suspension Reyco Granning IFS independent front air suspension
Fuel Tank 150-gal. fuel tank (dual fill)
Hitch 20,000-lb. hitch with 7/4-pin plug
Radiator Side-mounted radiator
Rear Axle Dana rear axle 20,000-lb., tag axle 14,000-lb.
Rear Axle Ratio 4.30 rear axle ratio
Rear Suspension Reyco Granning rear suspension
Shocks Bilstein shocks - 60MM front & 46MM on rear/tag
Tag Axle Tag axle air dump & Reyco Granning Passive Steer Tag Axle
Tires Michelin 365/70R 22.5" tires (front) and 315/80R 22.5" tires (rear)
Traction Control Automatic traction control
Transmission Allison 4000 MH 6-speed transmission
Turning Radius 55-degree turning radius


Exterior Walls 2-1/2" exterior wall with welded tubular aluminum construction and high-gloss, gel-coat fiberglass
Floor 2" x 4" floor truss construction
Floor Decking 3/4" 7-ply plywood main floor decking
Frame X-Bridge frames welded into chassis frame
Front Cap Steel-reinforced front cap and windshield frame
Insulation Insulation with reflective Flexfoil floor (R-33), roof (R-24), sidewalls (R-16), front and rear caps (R-22)
Roof One-piece fiberglass roof with 3/8" plywood decking and 4" arched aluminum roof truss
Slideouts Flush-mounted electric-powered slideout rooms with VegaTouch control
Underbelly Enclosed, insulated and heated floor and thermostat controlled heating in storage area
Walls Aluma-Tru Superstructure construction on 12"-16" centers

Heat, AC, Water & Power

Air Conditioning 15,000-BTU low profile A/Cs (3) with heat pumps and roof to ground condensation drain tubes
Batteries L16 AGM batteries (4), (6v/390 amp hrs. ea.)
Black Holding Tank Sprayer Black holding tank sprayer
Black Tank Management Thetford macerator holding tank dump system with electric gate valves, & manual back-up system
Electrical Hookup 50-amp power cord with electric reel
Generator Onan 12,500-watt diesel generator with auto gen start, on powered slide-out tray
Heating System Aqua-Hot 450 diesel hydronic water and heating system with in-floor heat throughout
Inverter (2) 3,000 watt pure sine wave inverter
Power Management Premium surge protector transfer switch
Propane All electric coach
Tank Vents 360 Siphon tank vent(s)
Water Hose w/ Electric Reel Water hose with electric reel
Water Filtration City and tank water filtration system
Water Monitoring SeeLevel tank monitoring system
Winterization Drain System Winterizing drain system


Accent Lights LED accent lights on underside of slideout rooms curbside
Cargo Features Powered slideout cargo trays (2)
Daytime Running Lights Daytime running lights
Door Awning Girard power entrance door awning with LED lights
Engine Door Power engine door
Entrance Door Aire-Secure travel locks for all pocket doors
Entrance Steps Deluxe concealed entry step / Lighted Entegra step
Exterior 3M front protective film mask
Exterior Entertainment Exterior 40" Samsung LED HDTV on TV bracket with extend, tilt and swivel arm with Samsung sound bar
Headlights LED high and low beam headlights
Keyless Fob Keyless entry with key fob
Keypad Handle Lighted grab handle with keypad system
LED Fog Lights LED fog lights
LED Lights LED marker and turn lights the full length of the coach
LED Docking Lights LED docking lights
Mirrors Chrome, heated, remote control, side-view mirrows with blind-spot indicators
Patio Awnings Roof mounted Girard Vision dual pitched patio awnings with LED lights
Rear Mudflap Full-width rear mudflap, with chrome "Cornerstone" nameplate
Satellite Dish Winegard in-motion satellite dome with prep for Trav'ler satellite dish
Utility Center Exterior utility center, heated and enclosed with system monitor panel
Third Brake Light Third Brake Light
TV Antenna Winegard Rayzar automatic powered TV antenna
Windows Frameless, tinted, dual-pane, safety-glass windows
Window Awnings Girard Ultra window shade and slide-out awnings


Additional Amenities Chrome, LED lit cupholders and three dual USB ports
Cameras Color "Total Vision" rear camera and digital side cameras
Driver / Passenger Seats Air cooled, 6-way power, lumbar, heated, leather driver and passenger seats with integrated 3-point safety belts
Flooring Powered flush stepwell cover
Infotainment System(s) All-glass paneled, dual 9" capacitive touchscreen in-dash infotainment center with Rand McNally RV navigation, Bluetooth, Sirius XM, AM/FM tuner, integrated camera control, house mode whole coach audio distribution, and integrated VegaTouch coach control
Leveling System Automatic hydraulic leveling jack system
Monitoring System(s) Spartan Message Center with LCD display featuring: odometer, tachometer, fuel economy, fuel remaining, outside air temp., coolant temp., engine oil temp. and pressure, transmission temp., turbo boost pressure, air pressure, trip meter, speed and voltage
Pedals Powered adjustable foot pedals
Power Features Battery boost system
Steering / Driving Features VIP, wood-grain, leather-wrapped, tilt and telescoping steering wheel with integrated controls for radio, cruise, and wipers
Sound System JBL premium audio sound system with speakers, amplifier, and subwoofer
Trip Management System
Visors & Privacy Shade Powered front sun visors and privacy shade
Windshield Ultra-Vision one-piece wrap-around tinted windshield


Additional Storage In-step storage with pull-out tray
Central Vacuuming System Central vacuum system
DVD Systems Blu-ray players in living area & bedroom
Electric Fireplace LED lit 1,400 watt electric fireplace standard (45B, 45Y) Optional with desk and TV lift option (45A, 45X)
Flooring High Gloss 12" x 24" porcelain tile with granite inlay design
Furniture Leather hide-a-bed(s) (N/A in 45B and 45Y)
Lighting System VegaTouch pad system, for complete integration of coach controls
Lighting LED recessed 12V lighting
Window Treatments Powered solar day and black out night shades
Television - Living Room Samsung 50" 4K UHDTV
Television - Front Overhead Samsung 32" LED HDTV
Sound - Living Room Bose SoundTouch 300 sound system
Washer/Dryer Stacked washer and dryer


Cabinet Extension Pullout countertop extension with drawers
Cooktop RV Chef Collection Furrion induction cooktop
Cutting Board Cutting board
Dishwasher Dishwasher with wood raised panel door front
Kitchen Countertops LED lit quartz countertops with integrated stainless steel sink
Kitchen Backsplash Porcelain tile backsplash with glass design inlays and a ceramic border
Microwave Whirlpool Gold 1.9 cu. ft. convection microwave oven
Refrigerator Whirlpool residential refrigerator with ice maker and water dispenser
Silverware Drawer Silverware drawer
Waste Basket Large deep drawer with waste basket


Bedroom Mattress / Bedding Select Comfort Sleep Number king size mattress
Bedroom Wardrobe Spacious cedar-lined wardrobe
Ceiling Fan Ceiling fan
Sound Samsung sound bar
Television Samsung 32" LED HDTV


Bathroom Countertop(s) LED lit quartz countertop(s) with integrated sink(s)
Bathroom Shower Porcelain tiled shower walls and floor with skylight
Bathroom Shower Door Frameless clear glass shower door
Bathroom Ventilation Power vent and skylight
Toilet Thetford Tecma china toilets with push button flush (45A, 45F, 45W) / Thetford china toilets with push button flush and Tecma in master bath, and Aria in stool room (45B) / Thetford Aria china toilet with push button flush (45X, 45Y)


Blind Spot Monitoring En-telligent Blind Spot Monitoring System, tuned to detect objects within the lane of traffic on either side of the vehicle
Carbon Monoxide Detector Carbon monoxide alarm
Collision Mitigation En-telligent Collision Mitigation System equipped with Collision Warning System, Adaptive Cruise Control, Collision Mitigation System, & Electronic Stability Control
Lights Motion sensor security lights (2)
Propane Alarm
Security Safe Security safe
Security System Security system with glass shatter sensors
Smoke Alarm Smoke alarm


Canadian Standards Optional
Central Vacuum System Standard
Desk Desk with 50" TV lift, fireplace, and hide-a-bed (45A and 45X)
Dinette Option 1 Leather dinette booth (45A, 45B, 45F, 45W, and 45Y)
Dinette Option 2 Dinette Booth (45X)
Dishwasher Drawer Standard
Fireplace LED lit 1,400 watt electric fireplace standard (45B, 45Y)
Freestanding Table Option 1 Freestanding table with 4 chairs (45A, 45B, 45F, 45W, and 45Y)
Freestanding Table Option 2 Freestanding table with 4 chairs, hide-a-bed, and curbside sofa (45X)
Freezer Exterior Freezer
Front Overhead TV Standard
Satellite Dish - US Winegard Trav'ler satellite dish - DIRECTV
Satellite Dish - CA Winegard Trav'ler satellite dish - Shaw Direct
Solar Solar panels (Dual-100 watt) with Morningstar SunSaver Duo solar panel charge controller
Theater Seating Option 1 Theater seating with power recliners and fixed center console
WiFi Extender Antenna WiFi Extender Antenna (4G LTE)

Décor Options

Entegra Coach peace of mind

2-year warranty and 3-year roadside assistance

At Entegra Coach, excellence doesn’t end with our stunning interiors and superior craftsmanship. We back each luxury coach with the industry’s highest level of service—including a 2-year warranty and 3-year roadside assistance.

2-year warranty details

3-year roadside assistance details


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