RV Details
- Year: 2010
- Model: BIG DOG FH399
- Listing ID: 7033216
- Partner ID: 5040350963
- Posted On: May 8, 2026
- Updated On: May 12, 2026
Description
The 2010 Sunnybrook Big Dog FH399 is a stylish and functional toy hauler that is ready to hit the road for your next adventure. With less than 10,000 miles on the odometer, this spacious trailer has plenty of life left to offer.
Standards & Specifications:
5500-watt gas powered generator - 300 hours
30-gallon tank
15,000 BTU A/C
10-gallon water/propane water heater
30-gallon fueling station with 12v pump for recreational vehicles
98-gallon freshwater capacity
50-gallon black water capacity
80-gallon grey water capacity
Dry hitch weight - 2,423lbs
Dry Gross Weight - 12,237lbs
GVWR/lbs. - 18,000
Triple 6,000 lbs. STR Axles
Exterior length - 35' 11"
Exterior height - 12' 11" with A/C
Exterior width - 8' 6"
Interior height - 8' 3"
Garage maximum capacity 2,000 lbs.
6 New STR 235/80R16E tires installed in 2023
New 16' awning installed in 2024
Queen sized bed in the master, 2 queen sized bunks in the garage
Garage dimensions 12 long x 8.5 wide 8.25 height - 8 ramp door
The generator, all appliances, electrical pumps, motors and mechanical equipment are fully functional and well maintained.
The 2010 model was produced well before the covid RV construction boom. Four season construction provides warms in the winter and lots of insulation for the summer months.
The RV is kept under a cover (pictured) and connected to 30AMP power when stored. A portable dehumidifier keeps the interior moisture and odor free during storage.
We just returned from a 1500-mile trip to Tennessee and would confidently head out cross country tomorrow. This is a reliable and well-maintained trailer that is ready for many more years of travel.