Skip to main contentSkip to navigation
RV Envy
RV floor plans
Inventory
Sell your RV
Dealers
Dashboard
  • 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 AngelesDallas–Fort WorthHoustonAtlantaPhoenixTampa BayOrlandoDenverChicagoSeattleNashvilleTorontoBrowse all metro areas →

Explore

  • RV floor plans
  • Browse inventory
  • Sell your RV
  • Dealers
  • Shopping tips

Company

  • About
  • Our story
  • Contact

For dealers

  • Dealer websites & CRM
  • Dealer insights

Join our mailing list

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

RV Envy

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 agentsPrivacyTerms
Dashboard
    1. Home
    2. Inventory
    3. 2021 Keystone Montana High Country 377FL

    2021 Keystone Montana High Country 377FL

    UsedFifth wheel|Stock #210212|Located at Bankston Motor Homes in Huntsville, AL
    $45,895$54,995
    Save $9,100

    Keystone Montana High Country fifth wheel 377FL highlights:

    • Unique Dual Entry

    • Loft Over Bedroom

    • Rear Private Bedroom

    • Four Slides

    • Residential Refrigerator

    • Patent-Pending Windshield

    Your family will love this fifth wheel with a loft area over the rear master bedroom and the front living area which includes an entertainment center with a telescoping TV and a fireplace, a front windshield for great views, and dual opposing slides that open up the whole room for added comfort. Your guests can convert the two hide-a-bed sofas at night and you and your spouse will enjoy the rear private bedroom with a slide out queen bed. Let the chef of the family prepare breakfast on the three burner cooktop and the eggs and milk can go back in the residential refrigerator. This model also features unique dual entry doors on opposite sides of the unit for added convenience, and you might like to add a few options such as a washer/dryer and a free-standing table with chairs.

    With each Montana High Country fifth wheel by Keystone you will enjoy family-friendly features, lightweight floorplans, and drop-frame construction for maximum storage. Each model is built for four season living with the heated and enclosed underbelly and the astrofoil insulated slide floors and underbelly. The Mystic Ash cabinetry, hardwood decorative slideout fascia, and accent crown molding create a luxurious fifth wheel everyone can get used to. These models include a Whisper Quiet A/C system to cool your space quietly and evenly, plus there is a 35,000 BTU furnace that will allow you to extend your camping season. The Montana High Country fifth wheels are equipped with a Road armor shock absorbing hitch pin for easy towing, and set-up will be a breeze with the Hitch Vision with LED lighting. There are many more features to love about these fifth wheels, like the MaxTurn front cap, the Solera series power awning(s), the residential appliances, and the list goes on!

    Specifications

    Length

    41 ft 11 in

    Dry weight

    13,267 lbs

    Sleeps

    9 people

    Slideouts

    4

    Unit features & options

    • 3-year limited structural warranty
    • 1-year limited base warranty
    • Color-coded unified wiring standard
    • 4G LTE and Wi-Fi prep
    • Tuf-Lok thermoplastic duct joiners
    • KeyTV multisource signal controller
    • In-floor heating ducts
    • Tru-fit slide construction
    • 12" I-beam w/ z-frame technology (Select Models)
    • 10" I-beam w/ z-frame technology (Select Models)
    • Road Armor shock absorbing hitch pin
    • Hitch Vision w/ LED lighting
    • 2" sidewall w/ dual layered lauan, high gloss fiberglass, double laminated and insulated rear wall
    • Tinted safety glass windows
    • Dual pane frameless windows w/ safety tint (Optional)
    • MaxTurn front cap w/ KeyShield automotive-grade paint
    • Fully walkable roof w/ Alpha seamless TPO membrane system
    • Rear ladder
    • Electric slide outs throughout
    • Insulated underbelly w/ forced hot air & electric tank heaters
    • 6000 lb. Dexter Gladiator thick wall axles w/ upgraded springs & Nev-R-Adjust brakes (Select Models)
    • 7000 lb. Dexter Gladiator thick wall axles w/ upgraded springs & Nev-R-Adjust brakes (Select Models)
    • Road Armor suspension w/ 360° vibration control
    • Premium 12-ply F-rated tires w/ 6-year manufacturer warranty & Tredit Care Plus roadside assistance

    Full specifications

    As provided in the original listing

    AC BTU30000 btu
    Available BedsQueen
    Awning Info19' Electric with LED Lights
    Axle Count2
    Axle Weight7000 lbs
    Black Water Capacity39 gals
    Cargo Capacity3193 lbs
    Dry Weight13267 lbs
    Electrical Service50 amp
    Ext Height13 ft 4 in
    Ext Width8 ft
    Fresh Water Capacity66 gals
    Furnace BTU40000 btu
    Grey Water Capacity78 gals
    Hitch Weight2465 lbs
    LP Tank Capacity30 lbs
    Length41 ft 11 in
    Number of Awnings1
    Number of LP Tanks2
    Refrigerator Size18 cu ft
    Refrigerator TypeResidential
    Shower Size48" x 30"
    Shower TypeShower w/Seat
    Sleeps9
    Slides4
    TV InfoLR Telescoping TV
    Tire SizeST235/80R16F
    Washer/Dryer AvailableYes
    Water Heater Capacity12 gal
    Water Heater TypeGas/Electric Quick Recovery

    Price history

    Days listed

    7

    Get more info

    2021 Montana High Country 377FL

    2021 Montana High Country 377FL
    I'm interested in
    Preferred contact method
    EmailPhone callText message

    The dealer sees only your first name and general area, not your full name, email, or phone. You'll chat through RV Envy and can share your info anytime.

    We'll add you to our weekly newsletter too, but you can unsubscribe at anytime.

    Dealer information

    Bankston Motor Homes – Huntsville

    2191 Jordan Lane NW
    Huntsville, AL 35816
    (855) 523-6241
    sales@bankstonmotorhomes.com

    Keystone Montana High Country fifth wheel 377FL highlights:

    • Unique Dual Entry

    • Loft Over Bedroom

    • Rear Private Bedroom

    • Four Slides

    • Residential Refrigerator

    • Patent-Pending Windshield

    Your family will love this fifth wheel with a loft area over the rear master bedroom and the front living area which includes an entertainment center with a telescoping TV and a fireplace, a front windshield for great views, and dual opposing slides that open up the whole room for added comfort. Your guests can convert the two hide-a-bed sofas at night and you and your spouse will enjoy the rear private bedroom with a slide out queen bed. Let the chef of the family prepare breakfast on the three burner cooktop and the eggs and milk can go back in the residential refrigerator. This model also features unique dual entry doors on opposite sides of the unit for added convenience, and you might like to add a few options such as a washer/dryer and a free-standing table with chairs.

    With each Montana High Country fifth wheel by Keystone you will enjoy family-friendly features, lightweight floorplans, and drop-frame construction for maximum storage. Each model is built for four season living with the heated and enclosed underbelly and the astrofoil insulated slide floors and underbelly. The Mystic Ash cabinetry, hardwood decorative slideout fascia, and accent crown molding create a luxurious fifth wheel everyone can get used to. These models include a Whisper Quiet A/C system to cool your space quietly and evenly, plus there is a 35,000 BTU furnace that will allow you to extend your camping season. The Montana High Country fifth wheels are equipped with a Road armor shock absorbing hitch pin for easy towing, and set-up will be a breeze with the Hitch Vision with LED lighting. There are many more features to love about these fifth wheels, like the MaxTurn front cap, the Solera series power awning(s), the residential appliances, and the list goes on!

    Specifications

    Length

    41 ft 11 in

    Dry weight

    13,267 lbs

    Sleeps

    9 people

    Slideouts

    4

    Unit features & options

    • 3-year limited structural warranty
    • 1-year limited base warranty
    • Color-coded unified wiring standard
    • 4G LTE and Wi-Fi prep
    • Tuf-Lok thermoplastic duct joiners
    • KeyTV multisource signal controller
    • In-floor heating ducts
    • Tru-fit slide construction
    • 12" I-beam w/ z-frame technology (Select Models)
    • 10" I-beam w/ z-frame technology (Select Models)
    • Road Armor shock absorbing hitch pin
    • Hitch Vision w/ LED lighting
    • 2" sidewall w/ dual layered lauan, high gloss fiberglass, double laminated and insulated rear wall
    • Tinted safety glass windows
    • Dual pane frameless windows w/ safety tint (Optional)
    • MaxTurn front cap w/ KeyShield automotive-grade paint
    • Fully walkable roof w/ Alpha seamless TPO membrane system
    • Rear ladder
    • Electric slide outs throughout
    • Insulated underbelly w/ forced hot air & electric tank heaters
    • 6000 lb. Dexter Gladiator thick wall axles w/ upgraded springs & Nev-R-Adjust brakes (Select Models)
    • 7000 lb. Dexter Gladiator thick wall axles w/ upgraded springs & Nev-R-Adjust brakes (Select Models)
    • Road Armor suspension w/ 360° vibration control
    • Premium 12-ply F-rated tires w/ 6-year manufacturer warranty & Tredit Care Plus roadside assistance

    Full specifications

    As provided in the original listing

    AC BTU30000 btu
    Available BedsQueen
    Awning Info19' Electric with LED Lights
    Axle Count2
    Axle Weight7000 lbs
    Black Water Capacity39 gals
    Cargo Capacity3193 lbs
    Dry Weight13267 lbs
    Electrical Service50 amp
    Ext Height13 ft 4 in
    Ext Width8 ft
    Fresh Water Capacity66 gals
    Furnace BTU40000 btu
    Grey Water Capacity78 gals
    Hitch Weight2465 lbs
    LP Tank Capacity30 lbs
    Length41 ft 11 in
    Number of Awnings1
    Number of LP Tanks2
    Refrigerator Size18 cu ft
    Refrigerator TypeResidential
    Shower Size48" x 30"
    Shower TypeShower w/Seat
    Sleeps9
    Slides4
    TV InfoLR Telescoping TV
    Tire SizeST235/80R16F
    Washer/Dryer AvailableYes
    Water Heater Capacity12 gal
    Water Heater TypeGas/Electric Quick Recovery

    Price history

    Days listed

    7

    Get more info

    2021 Montana High Country 377FL

    2021 Montana High Country 377FL
    I'm interested in
    Preferred contact method
    EmailPhone callText message

    The dealer sees only your first name and general area, not your full name, email, or phone. You'll chat through RV Envy and can share your info anytime.

    We'll add you to our weekly newsletter too, but you can unsubscribe at anytime.

    RV Envy

    2021 Keystone Montana High Country 377FL

    Used · Fifth wheel

    $45,895$54,995Save $9,100

    Bankston Motor Homes – Huntsville

    2191 Jordan Lane NW

    Huntsville, AL 35816

    (855) 523-6241

    Stock #210212

    2021 Keystone Montana High Country 377FL floor plan

    Specifications

    Length41 ft 11 in
    Dry weight13,267 lbs
    Sleeps9 people
    Slideouts4

    Full specifications

    AC BTU30000 btu
    Available BedsQueen
    Awning Info19' Electric with LED Lights
    Axle Count2
    Axle Weight7000 lbs
    Black Water Capacity39 gals
    Cargo Capacity3193 lbs
    Dry Weight13267 lbs
    Electrical Service50 amp
    Ext Height13 ft 4 in
    Ext Width8 ft
    Fresh Water Capacity66 gals
    Furnace BTU40000 btu
    Grey Water Capacity78 gals
    Hitch Weight2465 lbs
    LP Tank Capacity30 lbs
    Length41 ft 11 in
    Number of Awnings1
    Number of LP Tanks2
    Refrigerator Size18 cu ft
    Refrigerator TypeResidential
    Shower Size48" x 30"
    Shower TypeShower w/Seat
    Sleeps9
    Slides4
    TV InfoLR Telescoping TV
    Tire SizeST235/80R16F
    Washer/Dryer AvailableYes
    Water Heater Capacity12 gal
    Water Heater TypeGas/Electric Quick Recovery

    Options and equipment may differ from those listed. We do our best to ensure accuracy, but please confirm all details with the dealer before purchase.