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- List: $64,985 17% OFF
- You Save: $10,995
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Sleeps 6
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5 Slides
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Front LivingKitchen Island
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42ft Long
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14,013 lbs
3712KB Floorplan
Specifications
Sleeps | 6 | Slides | 5 |
Length | 41 ft 6 in | Ext Width | 8 ft 4 in |
Ext Height | 13 ft 4 in | Hitch Weight | 2810 lbs |
Dry Weight | 14013 lbs | Cargo Capacity | 2487 lbs |
Fresh Water Capacity | 54 gals | Grey Water Capacity | 78 gals |
Black Water Capacity | 44 gals | Tire Size | ST235/85R16G |
Furnace BTU | 35000 btu | Available Beds | King |
Refrigerator Type | Gas/Electric | Refrigerator Size | 18 cu ft |
Convection Cooking | Yes | Cooktop Burners | 3 |
Number of Awnings | 2 | Axle Weight | 7000 lbs |
LP Tank Capacity | 30 lbs | Water Heater Type | On Demand |
AC BTU | 30000 btu | TV Info | LR 50" LED TV |
Awning Info | 14' and 14' Carefree with Adjustable Arms | Axle Count | 2 |
Washer/Dryer Available | Yes | Number of LP Tanks | 2 |
Shower Type | Walk-In Shower | Electrical Service | 50 amp |
VIN | 4YDF37121ME780851 |
Description
Used 2021 Keystone Alpine 3712KB – Residential Comfort Meets Travel-Ready Luxury
Spacious Residential Layout with Separate Living Room
Designed with thoughtful separation of spaces, the Alpine 3712KB delivers a true residential experience on wheels.
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Front Living Area with Windshield View
Relax in the dedicated front living room with theater seating, dual tri-fold sofas for extra sleeping space, and a 50" LED TV above the cozy fireplace. The panoramic patent-pending front windshield offers natural light and campsite views that elevate your lounging experience. -
Private Rear Bedroom with King Bed
Enjoy a restful night in the king bed with storage underneath, dual wardrobes for all your clothing, and a chest with TV mount above. Your retreat is private, quiet, and connected directly to the master bath for added convenience. -
Dual Vanity Bathroom
The rear full bathroom includes dual sinks, a walk-in shower, and linen storage. Plus, there’s a dedicated washer/dryer prep area so you can easily add laundry appliances and extend your time on the road.
Gourmet Kitchen for the Traveling Chef
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Kitchen Island & Convection Microwave
Prep meals in style with solid-surface countertops, a large kitchen island, and high-end appliances including a convection microwave and three-burner range. -
Dual Pantries
This model features both a standard pantry and a walk-in pantry, so there’s room for dry goods, bulk food, and all your favorite kitchen gadgets. -
Optional Residential Fridge
Standard 18 cu. ft. gas/electric refrigerator keeps food fresh for long journeys, with the option to upgrade to a residential unit if desired.
High-End Construction & Keystone Quality
Alpine fifth wheels are known for their full-time livability and four-season travel features:
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100" Wide Body Construction
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Dual 15,000 BTU Whisper Quiet A/C System
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iN-Command Control System
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Nautilus On-Demand Water Heater
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Insulated & Heated Holding Tanks
Style That Feels Like Home
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Aspen Oak Cabinetry with Renewed Oak Accents
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Natural Stone Solid Surface Countertops
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Varied Plank Width Flooring
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LCI Solid Step Entry
Why Buy from Little Dealer Little Prices?
At Little Dealer Little Prices, we specialize in helping adventurers like you hit the road in comfort, confidence, and style. Here’s what makes us different:
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Family-Owned Since 1966 – We’ve built a legacy of trust and unbeatable value in RV sales and service.
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Expert Trade-In Assistance – Ready to upgrade? We'll make it easy and fair.
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Affordable Financing Solutions – Flexible terms tailored to your lifestyle.
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Certified RV Tech Support – Get peace of mind with our expert maintenance and repair services.
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Extensive Inventory – Find exactly what you need—from luxury fifth wheels to compact travel trailers.
Luxury Living with the Freedom to Roam
The 2021 Keystone Alpine 3712KB is a masterclass in comfort, space, and high-performance RVing. Whether you're looking to go full-time or just want a residential-style RV for extended getaways, this fifth wheel offers everything you need—and more.
Available now at Little Dealer Little Prices—your adventure starts here.
Features
Standard Features (2021)
Keystone Exclusives
- Color-coded unified wiring standard
- 4G LTE and Wi-Fi prep
- Tuf-Lok™ thermoplastic duct joiners
- KeyTV™
- In-floor heating ducts
- Tru-fit™ slide construction
Exterior
- 12" I-Beam frame and 100" wide-body construction
- Road Armor™ shock absorbing hitch pin
- Hitch Vision™ w/ LED lighting
- Laminated sidewalls w/ double-welded aluminum construction and double insulated, laminated rear-end wall
- Large, tinted safety glass windows (80% tint)
- Dual pane windows (optional)
- Painted fiberglass cap w/ patented Key Shield™ protection and LED lighting
- Radius roof w/ 5" pre-engineered roof trusses and walkable rafters
- 1-piece Alpha Super Flex TPO membrane (18-year limited warranty)
- Exterior ladder
- Summit slide-rooms w/ 6'10" interior height and hydraulic selector valves for slide outs
- Heated and enclosed underbelly w/ 1-piece polyproplylene
- Dexter® heavy duty 7,000 lb axles w/ Nev-R-Adjust brakes
- Road Armor™ Shock Absorbing Suspension
- Heavy duty G-rated Tires (6-year warranty)
- One touch, 6-point hydraulic level up system
- Super size, 6'4" tall, 30" wide entry door
- Strut assisted SolidStep® by Lippert Components®
- 200 cu. ft. heated basement storage w/ tie downs and class "A" style, dual latch "slam" doors
- Rear, slide-out storage tray (select models)
- Back-up and side camera prep
- Battery quick-disconnect
- Easy access water works center - fully enclosed and heated
- Generator prep (optional)
- 5,550 watt Cummins Onan LP gas generator (optional)
- 66 gal. fresh Water, 83 gal. gray water, 49 gal. black water tanks
- Outdoor kitchen/entertainment (select models)
- 50 AMP service w/ electric power-cord reel
- Outside shower w/ hot and cold water
- Carefree power awning w/ adjustable arms
- 2” Accessory Hitch w/ 300 lb. Capacity (select models)
- 2” Towing Hitch w/ Wiring Harness (3,000 lbs. Towing Capacity) (select models)
- Solar-prep
Weather Protection
- Tested, Polar Pack protection for four-season camping and heat ducting to tanks w/12-volt heat pads
Interior
- Designer floor throughout
- Extra tall, 6'10" main slide height
- Hardwood slideout fascia w/ wood accent
- Day/night roller shades
- Designer upholstered window valances
- Stunning solid wood cabinet doors, cabinet framing, and slide fascia
- Thomas Payne® furniture equipped w/ heat, massage, LED lights and USB charging stations in theatre seats
- Crown molding
- 40" fireplace producing 5,000 BTU of electric heat
- Central vacuum
Kitchen Features
- Solid wood cabinet doors, drawer fronts, and cabinet framing
- Solid-surface countertops
- Stainless steel, extra deep sink w/ dual bowls and a solid surface sink cover
- High-rise, single-lever faucet w/ sprayer
- Amazing Legless Dinette Table w/ storage; and (4) high-back dinette chairs w/ storage
Bathroom Features
- Solid surface countertops
- Translucent glass shower enclosure w/ massaging shower head and shower skylight
- Porcelain foot-flush toilet
- Medicine cabinet
- Linen cabinet
Bedroom Features
- King bed
- (2) LED overhead reading lights
- Bedside outlets on both sides of bed
- Quilted bedspread and pillows
- TV in bedroom
- Modern, nail-head decorative headboard
Appliances & Utilities
- (2) 30 lb propane bottles
- Dual Quiet Cool (2) high-pressure A/Cs w/ 15,000 BTU Whisper Quiet Technology, w/ electric pump and cold air return vents (2). Rear A/C includes a 16,500 BTU heat pump.
- 3rd A/C (optional)
- 35,000 BTU gas furnace
- Fully programmable dual zone temperature control
- On-demand water heater
- Super Cinema - 50" LED TV w/ sound system
- 18 cu. ft. gas/electric refrigerator
- 18 cu. ft. residential refrigerator (optional)
- 30" convection oven/microwave
- Furrion® Chef Collection kitchen appliances
- Stackable washer/dryer prep
- LED lighting throughout
- iN-Command® Generation 3/Global Connect control system
Safety
- Breakaway switch
- GFI receptacles
- Carbon monoxide detector
- Smoke detector
- Propane gas leak detector
- Fire extinguisher
Please see us for a complete list of features and available options.
All standard features and specifications are subject to change.
All warranty info is typically reserved for new units and is subject to specific terms and conditions. See us for more details.
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*All calculated monthly payments are an estimate for qualified buyers only and do not constitute a commitment that financing or a specific interest rate or term is available. Financing terms may not be available in all Campers Inn locations. Campers Inn RV Sales is not responsible for any misprints, typos, or errors found in our website pages. Any price listed excludes sales tax, registration tags, and delivery fees. Manufacturer pictures, specifications, and features may be used in place of actual inventory in stock on our lot. Please contact us for availability as our inventory changes rapidly.
Manufacturer and/or stock photographs may be used and may not be representative of the particular unit being viewed. Where an image has a stock image indicator, please confirm specific unit details with your dealer representative.
Manufacturer and/or stock photographs may be used and may not be representative of the particular unit being viewed. Where an image has a stock image indicator, please confirm specific unit details with your dealer representative.