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Used 2017 Keystone Montana 3721RL

Elkhart, INFun Town RVDirections

Sleeps4
Length39' 7"
Dry weight12,885 lb
Slide-outs3

About this RV

This Keystone Montana fifth wheel features loads of interior space with three large slide outs, a rear living room layout, and convenient kitchen island. This model is identical to model 3720RL. Enter model 3721RL and find a wide open concept living space with dual opposing slides. There is a dinette for four and optional theater seating in a slide out to your immediate left once inside. A nice hide-a-bed sofa fills the rear wall along with dual end tables, plus overhead cabinets the entire width of the unit. A second slide is found opposite the door and begins with an entertainment center including a HD TV and fireplace adjacent to the sofa. Next, you will find a pantry, counter space, a three burner range, and 18 cu. ft. residential refrigerator slide out. A convenient island offers additional counter space and storage, plus it is the location of a double kitchen sink. You will also find a floor to ceiling wardrobe just inside the door on your right before heading up the steps to a front master bedroom and bath. The bath features a 48" x 30" shower with seat, toilet, and vanity with sink. The sliding door in the bath leads to the front master suite.

Specifications as listed by the dealer

Type
Fifth wheel
Condition
Used
Year
2017
Make
Keystone
Model
Montana 3721RL
Stock number
212498A
VIN
4YDF37225H4703698
Hitch weight
2,840 lb
Sleeps
4
Slides
3
Length
39 ft 7 in
Ext Width
8 ft
Ext Height
13 ft 5 in
Dry Weight
12,885 lbs
Cargo Capacity
3,955 lbs
Fresh Water Capacity
66 gals
Grey Water Capacity
88 gals
Black Water Capacity
49 gals
Tire Size
ST235/80R16G
Furnace BTU
35,000 btu
Available Beds
Queen
Refrigerator Type
Residential French Door with Ice Maker
Refrigerator Size
18 cu ft
Convection Cooking
Yes
Cooktop Burners
3
Shower Size
48" x 30"
Number of Awnings
2
Axle Weight
14,000 lbs
LP Tank Capacity
60
Water Heater Capacity
12 gal
Water Heater Type
DSI Gas/Electric
AC BTU
30,000 btu
TV Info
Living Room 48" LED TV, Bedroom 32" LED TV, Outside 32" HD TV
Awning Info
11', 16' Electric
Axle Count
2
Washer/Dryer Available
Yes
Number of LP Tanks
2
Shower Type
Shower w/Seat

Features

  • Glazed zinfandel cherry cabinetry
  • Solid hardwood slide out fascia
  • Roller shades
  • Front to rear interior vaulted ceiling
  • Tri-fold hide-a-bed sofa
  • Hidden cabinet hinges
  • 6’ 6” Tall main slide-outs
  • Flush Mounted LED Interior Lights
  • Ceiling Fan with Light Kit
  • Ceiling crown molding with LED Lighting
  • Stainless steel kitchen sink
  • Solid surface flush mount sink covers
  • 30” over-the-range convection/microwave oven
  • Power vent fan with rain sensor in kitchen
  • Full extension drawer guides
  • Pull out kitchen trash can (Most models)
  • Solid surface kitchen counter-tops
  • Hi arch kitchen faucet with integrated pull down sprayer
  • Sink cover storage below kitchen sink
  • 18 Cubic foot 4 door RV refrigerator (3000, 3160, 3660, 3720, 3730, 3790, 3810, 3820, 3910, 3950)
  • Residential french door refrigerator w/ ice maker and 1000 watt inverter (3661, 3721, 3731, 3791, 3811, 3911)
  • Wall mounted free standing dinette with (2) fixed and (2) folding chairs (Optional 3820)
  • Central vacuum with interior and exterior ports plus toe kick sweep
  • RG-6 satellite prep
  • 48” HD LED TV in living area
  • DVD/CD/MP3 entertainment system with bluetooth
  • Winegard Rayzar Z-1 HD digital TV antenna
  • 32” HD LED TV in bedroom
  • Marine grade exterior speakers
  • 60” x 80” Queen Bed
  • iRelax high density mattress
  • (2) Bedside electrical outlets
  • Bedside night stands
  • Reading lights over bed
  • Prepped for combo OR 2 piece washer/dryer with separate 20amp circuits for each appliance
  • Quilted headboard
  • Massive storage under bed
  • Seamless 48” x 30” fiberglass shower
  • Porcelain foot flush toilet
  • Solid surface bathroom vanity

Questions about this 2017 Keystone Montana 3721RL

Is it still for sale?

Fun Town RV’s website listed it for sale on November 5, 2026. RV Shift checks dealers’ websites about once a day, so ask the dealer to be sure.

What does it take to tow it?

RV Finder’s estimate: it needs a vehicle rated to tow about 14,100 lb, with a fifth-wheel hitch. That is its 12,885 lb dry weight plus 1,200 lb for water and gear, rounded up to the next 100 lb. RV Finder shows whether it is within your vehicle’s published rating, from the maker’s own towing guide, and checks tongue weight and payload too. Confirm your numbers in your owner’s manual and on the sticker in the driver’s door jamb. Check it in RV Finder

How do I ask the dealer about it?

Use the Check availability form on this page. Your message comes to RV Shift and we pass it to Fun Town RV. You can also call Fun Town RV at (833) 386-8696.

Listing and photos: Fun Town RV. Details come from the dealership and can change; confirm them before you buy.

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