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Year
2020
Year
2023
Parent Company
Thor Industries, Inc.
Parent Company
Thor Industries, Inc.
Generic Type (Primary)
Travel Trailer
Generic Type (Primary)
Class B
Make
Airstream
Make
Airstream
Display Name
International Serenity 27FB Twin
Display Name
Interstate 24GT
Manufacturer Country
USA
Manufacturer Country
USA
Introduction Year
2019
Introduction Year
2015
Regional Availability
All Regions
Regional Availability
All Regions
Price
Standard
Price
Standard
MSRP
$106,400
MSRP
$233,700
Basic Warranty (Months)
36
Basic Warranty (Months)
-
Structure Warranty (Months)
36
Structure Warranty (Months)
-
Roof Warranty (Years)
3
Roof Warranty (Years)
2
Basic Warranty (Miles/Months)
-
Basic Warranty (Miles/Months)
36000 / 36
Structure Warranty (Months/Miles)
-
Structure Warranty (Months/Miles)
36 / 36000
Chassis Warranty (Months/Miles)
-
Chassis Warranty (Months/Miles)
36 / 36000
Powertrain Warranty (Months/Miles)
-
Powertrain Warranty (Months/Miles)
60 / 100000
Dimensions
Standard
Dimensions
Standard
Weight
Standard
Weight
Standard
Capacities
Standard
Capacities
Standard
Holding Tanks
Standard
Holding Tanks
Standard
Number Of Fresh Water Holding Tanks
1
Number Of Fresh Water Holding Tanks
1
Number Of Gray Water Holding Tanks
1
Number Of Gray Water Holding Tanks
1
Number Of Black Water Holding Tanks
1
Number Of Black Water Holding Tanks
1
Number Of Propane Tanks
2
Number Of Propane Tanks
1
Length (in/mm/ft/m)
336 / 8500 / 28 / 8.5
Length (in/mm/ft/m)
294 / 7500 / 24.5 / 7.5
Width (in/mm)
101.5 / 2578.1
Width (in/mm)
79.5 / 2019.3
Height (in/mm)
117 / 2971.8
Height (in/mm)
115 / 2921
Interior Height (in/mm)
79.5 / 2019.3
Interior Height (in/mm)
74.25 / 1886
Dry Weight (lbs/kg)
5868 / 2661.7
Dry Weight (lbs/kg)
9323 / 4228.9
Payload Capacity (lbs/kgs)
1732 / 785.6
Payload Capacity (lbs/kgs)
1708 / 774.7
GVWR (lbs)
7600
GVWR (lbs)
11030
Hitch Weight (lbs)
791
Hitch Weight (lbs)
-
Total Fresh Water Tank Capacity (gal/l)
39 / 147.6
Total Fresh Water Tank Capacity (gal/l)
23 / 87.1
Total Gray Water Tank Capacity (gal/l)
37 / 140.1
Total Gray Water Tank Capacity (gal/l)
24 / 90.8
Total Black Water Tank Capacity (gal/l)
39 / 147.6
Total Black Water Tank Capacity (gal/l)
11 / 41.6
Propane Tank (s)
Standard
Propane Tank (s)
Standard
Total Propane Tank Capacity (gal/lbs)
14.2 / 60
Total Propane Tank Capacity (gal/lbs)
14.6 / 61.9
Wheelbase (in/mm)
-
Wheelbase (in/mm)
170 / 4318
Towing Capacity (lbs/kgs)
-
Towing Capacity (lbs/kgs)
5000 / 2268
Fuel Capacity (gal/l)
-
Fuel Capacity (gal/l)
24.5 / 92.7
Construction
Standard
Construction
Standard
Body Material
Aluminum
Body Material
-
Sidewall Construction
Aluminum
Sidewall Construction
-
Number of Doors
1
Number of Doors
1
Sliding Glass Door
No
Sliding Glass Door
No
Power Retractable Slideout
No
Power Retractable Slideout
-
Awning
Standard
Awning
Standard
Number of Awnings
1
Number of Awnings
1
Power Retractable Awning
Yes
Power Retractable Awning
Yes
Screened Room
No
Screened Room
No
Leveling Jacks
Standard
Leveling Jacks
Optional
Leveling Jack Type
Front Manual / Rear Manual
Leveling Jack Type
-
Sky Light
Standard
Sky Light
-
Roof Vents
Standard
Roof Vents
Standard
Propane Tank Cover
Standard
Propane Tank Cover
-
Exterior Shower
Standard
Exterior Shower
Standard
Rear Bumper Drain Hose Carrier
Standard
Rear Bumper Drain Hose Carrier
-
Power Retractable Entry Steps
-
Power Retractable Entry Steps
Standard
Kitchen / Living Area
Standard
Kitchen / Living Area
Standard
Kitchen / Living Area Flooring Type
Vinyl
Kitchen / Living Area Flooring Type
Vinyl
Kitchen Table Configuration
Bench Seats
Kitchen Table Configuration
Pedestal Table
Kitchen Location
Center
Kitchen Location
Center
Living Area Location
Rear
Living Area Location
Rear
Layout
Oven / Stove
Layout
Stove
Number Of Oven Burners
3
Number Of Oven Burners
2
Overhead Fan
Yes
Overhead Fan
Yes
Microwave Oven
Standard
Microwave Oven
Standard
Refrigerator
Standard
Refrigerator
Standard
Refrigerator Size
Mid-Size
Refrigerator Size
Mid-Size
Refrigerator Power Mode
Electric / Propane
Refrigerator Power Mode
Electric
Sink / Faucet
Standard
Sink / Faucet
Standard
Sink Cover / Cutting Boards
Standard
Sink Cover / Cutting Boards
Standard
Sofa
Standard
Sofa
Standard
Number Of Sofas
1
Number Of Sofas
3
Sofa Material
Leather
Sofa Material
Leather
Reclining Sofa
No
Reclining Sofa
No
Beds
Standard
Beds
Standard
Max Sleeping Count
6
Max Sleeping Count
3
Number Of Bunk Beds
2
Number Of Bunk Beds
-
Number Of Convertible / Sofa Beds
2
Number Of Convertible / Sofa Beds
1
Master Bedroom
Standard
Master Bedroom
-
Master Bedroom Flooring Type
Vinyl
Master Bedroom Flooring Type
-
Master Bedroom Door Style
Accordion
Master Bedroom Door Style
-
Full Size Master Bedroom Closet
No
Full Size Master Bedroom Closet
-
Master Bedroom Mirror Doors
No
Master Bedroom Mirror Doors
-
Master Bedroom Shades / Curtains
Yes
Master Bedroom Shades / Curtains
-
Master Bedroom Location
Front
Master Bedroom Location
-
Bunkhouse
No
Bunkhouse
No
Heated
No
Heated
-
Bed Spreads
Standard
Bed Spreads
-
Bathroom
Standard
Bathroom
Standard
Number Of Bathrooms
1
Number Of Bathrooms
1
Bathroom Flooring Type
Vinyl
Bathroom Flooring Type
Vinyl
Bathroom Location
Center
Bathroom Location
Center
Toilet
Standard
Toilet
Standard
Toilet Type
Porcelain
Toilet Type
Plastic
Shower
Standard
Shower
Standard
Door Type
Plastic / Glass
Door Type
Curtain
Bathroom Sink
Standard
Bathroom Sink
Standard
Bathroom Medicine Cabinet
Standard
Bathroom Medicine Cabinet
-
Bathroom Mirror
Standard
Bathroom Mirror
Standard
Bathroom Vent / Fan System
Standard
Bathroom Vent / Fan System
Standard
Power Vent Fan
Standard
Power Vent Fan
Standard
Wheels
Standard
Wheels
Standard
Wheels Composition
Aluminum
Wheels Composition
Aluminum
Number Of Axles
2
Number Of Axles
1
Tires
Standard
Tires
Standard
Tire Brand
Goodyear®
Tire Brand
-
Rear Tire Width
225
Rear Tire Width
215
Rear Tire Aspect Ratio
75
Rear Tire Aspect Ratio
85
Rear Wheel Diameter
15
Rear Wheel Diameter
16
Spare Tire
Standard
Spare Tire
Standard
Spare Tire Location
Exterior Mounted
Spare Tire Location
Exterior Mounted
Rear Tire (Full Spec)
Goodyear® ST225/75R 15
Rear Tire (Full Spec)
LT 215/85R 16E
Front Tire Width
-
Front Tire Width
215
Front Tire Aspect Ratio
-
Front Tire Aspect Ratio
85
Front Tire Speed Rating
-
Front Tire Speed Rating
E
Front Wheel Diameter
-
Front Wheel Diameter
16
Rear Tire Speed Rating
-
Rear Tire Speed Rating
E
Front Wheel Width (in)
-
Front Wheel Width (in)
5.5
Rear Wheel Width (in)
-
Rear Wheel Width (in)
5.5
Front Tire (Full Spec)
-
Front Tire (Full Spec)
LT 215/85R 16E
Brakes
Standard
Brakes
Standard
Rear Brake Type
Electric Drum
Rear Brake Type
Hydraulic Disc
Front Brake Type
-
Front Brake Type
Hydraulic Disc
Anti-Lock Brakes
-
Anti-Lock Brakes
Standard
Fresh Water Holding Tank Gauge
Standard
Fresh Water Holding Tank Gauge
Standard
Gray Water Holding Tank Gauge
Standard
Gray Water Holding Tank Gauge
Standard
Black Water Holding Tank Gauge
Standard
Black Water Holding Tank Gauge
Standard
Propane Tank Gauge
-
Propane Tank Gauge
Standard
Water Pump Power Display
-
Water Pump Power Display
Standard
Voltage Meter
-
Voltage Meter
Standard
Exterior Flood Lights
Standard
Exterior Flood Lights
Standard
Hitch Lights
Standard
Hitch Lights
-
Battery
Standard
Battery
Standard
Battery Power Converter
Yes
Battery Power Converter
Yes
Battery Converter Amps
55
Battery Converter Amps
50
Prewiring
Standard
Prewiring
Standard
Air Conditioning Prewiring
Yes
Air Conditioning Prewiring
Yes
Cable Prewiring
Yes
Cable Prewiring
Yes
Heat Prewiring
Yes
Heat Prewiring
Yes
TV Antenna Prewiring
Yes
TV Antenna Prewiring
Yes
Satellite Prewiring
Yes
Satellite Prewiring
Yes
Washer / Dryer Prewiring
No
Washer / Dryer Prewiring
No
Exterior Plugs
Standard
Exterior Plugs
Standard
Ground Fault Plugs
Standard
Ground Fault Plugs
Standard
Solar Battery Charger
Optional
Solar Battery Charger
Standard
Phone Prewiring
-
Phone Prewiring
No
Generator
-
Generator
Standard
Air Conditioning
Standard
Air Conditioning
Standard
Air Conditioning Type
Automatic
Air Conditioning Type
Automatic
Heater
Standard
Heater
Standard
Heater Type
Automatic
Heater Type
Automatic
Water Heater Tank
Standard
Water Heater Tank
Standard
Water Heater Pump Power Mode
Electrical / Propane
Water Heater Pump Power Mode
Electrical / Propane
Water Heater Tank Bypass
Yes
Water Heater Tank Bypass
Yes
Freeze Proof Insulation
Standard
Freeze Proof Insulation
Standard
Water Heater Tank Capacity (g/l)
6 / 22.7
Water Heater Tank Capacity (g/l)
-
Other HVAC
-
Other HVAC
Optional
Rear Video Backup Camera
Standard
Rear Video Backup Camera
Standard
Power Windows
-
Power Windows
Standard
Cruise Control
-
Cruise Control
Standard
Smoke Detector
Standard
Smoke Detector
Standard
Carbon Monoxide Detector
Standard
Carbon Monoxide Detector
Standard
Propane Alarm
Standard
Propane Alarm
Standard
Number Of Emergency Exits
1
Number Of Emergency Exits
1
Emergency Exit (s)
Standard
Emergency Exit (s)
Standard
Radio
Standard
Radio
Standard
Brand Name
JL Audio
Brand Name
-
Number Of Radios
1
Number Of Radios
1
Satellite
No
Satellite
No
Speakers
Standard
Speakers
Standard
Surround Sound
Yes
Surround Sound
No
CD Player
Standard
CD Player
Standard
Number Of Discs
1
Number Of Discs
1
DVD Player
Standard
DVD Player
Standard
Television
Standard
Television
Standard
Television Brand Name
LG
Television Brand Name
-
Number Of Televisions
1
Number Of Televisions
2
Retractable Roof Antenna
Standard
Retractable Roof Antenna
Standard
Speaker Location (s)
Interior / Exterior
Speaker Location (s)
Interior
Paint
Standard
Paint
Standard
Metallic
No
Metallic
-
Interior Decor
Standard
Interior Decor
Standard
Wallpaper
No
Wallpaper
Yes
Interior Wood Finish
No
Interior Wood Finish
Yes
Curtains / Shades
Standard
Curtains / Shades
Standard
Other Paint & Finish
-
Other Paint & Finish
Optional
Engine
-
Engine
Standard
Engine Brand Name
-
Engine Brand Name
Mercedes-Benz®
Chassis Brand
-
Chassis Brand
Mercedes-Benz® Sprinter
Engine Type
-
Engine Type
V6
Chassis Model
-
Chassis Model
3500
Cylinders
-
Cylinders
6
Horsepower RPM
-
Horsepower RPM
3800
Torque RPM
-
Torque RPM
1400
Turbocharged
-
Turbocharged
Yes
Supercharged
-
Supercharged
No
Fuel Type
-
Fuel Type
Diesel
Fuel Requirements
-
Fuel Requirements
Regular
Carburetion
-
Carburetion
Standard
Carburetion Type
-
Carburetion Type
Fuel Injected
Horsepower (bhp)
-
Horsepower (bhp)
188
Torque (Nm)
-
Torque (Nm)
440
Displacement (l)
-
Displacement (l)
3
Transmission
-
Transmission
Standard
Transmission Brand
-
Transmission Brand
Mercedes-Benz®
Transmission Type
-
Transmission Type
Automatic
Number Of Speeds
-
Number Of Speeds
7
Overdrive
-
Overdrive
Yes
Driveline Type
-
Driveline Type
4X2
Rear Hitch
-
Rear Hitch
Standard
Rear Hitch Type
-
Rear Hitch Type
Receiver
Seat Type
-
Seat Type
Bucket
Seat Material
-
Seat Material
Leather
Power Adjustable Seat
-
Power Adjustable Seat
Yes
Reclining Seats
-
Reclining Seats
Yes
Swivel Seats
-
Swivel Seats
Yes
Seat Armrests
-
Seat Armrests
Yes
Seat Specifications
-
Seat Specifications
Standard
Number Of Seats
-
Number Of Seats
2
Number Of Rows
-
Number Of Rows
1
Heated Seat
-
Heated Seat
Standard