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New 2021 Grand Design Momentum 399TH

2021 399TH Features and Options
Grand Design Momentum toy hauler 399TH highlights:
  • Dual Entry
  • Full and Half Bath
  • Exterior LED TV
  • 13' Separate Garage
  • Loft
  • Fold-Down Side Patio

 

If you are ready to play with your off-road toys, then it's time to hitch up this Momentum fifth wheel toy hauler after loading your toys in the 13' separate garage. You will be able to get cleaned up after getting muddy from the trails in the half bath in the garage or the sunken tub with skylight in the full bathroom up in the master suite. The kids can sit at the kitchen island with bar stools or relax on the theater seats while watching the 49" LED TV and fireplace. The fold-down side patio is going to be your favorite spot when summertime rolls around, and the exterior unobstructed pass-through storage compartment will allow you to bring along some lawn chairs that you can set up on the patio.

 

With any Grand Design Momentum toy hauler fifth wheel, you will enjoy extraordinary living and extreme playtime with the Weather-Tek insulation for four seasons of protection and a fully enclosed fuel pump station to keep the fun going the whole time. The Tuff-Ply garage flooring is gas and oil resistant, and it includes 2,500-LB flush-mount tie-downs to keep your toys secure while moving down the road. The interior includes color-changing LED accent lighting, a convection microwave, a central vacuum system with tools and a dust pan, and a OneControl 7" touchscreen control panel with app controls so that you can operate many of your RV's functions from wherever you want. Any Grand Design Momentum allows you to keep your active lifestyle no matter where you decide to stay!

What Our Customers Are Saying

Thank You

"This was our first RV purchase, it was better than we expected. Very relaxed and professional sales people, not high pressure sale at all. It was the perfect experience for our first time and we look forward to upgrading in a few years. Thank you for the great trailer and future memories!" - Tim
Location: Livermore
Stock# M399TH
2021 399TH Specifications
Sleeps 3
Slides 3
Length 43 ft 1 in
Ext Height 13 ft 5 in
Interior Color Mocha, Oakley
Exterior Color Burnt Orange, Silver, Blue, Burgundy, White Pearl
Hitch Weight 3400 lbs
Gross Weight 20000 lbs
Dry Weight 15900 lbs
Fresh Water Capacity 155 gals
Grey Water Capacity 104 gals
Black Water Capacity 104 gals
Tire Size 16"
Furnace BTU 40000 btu
Fuel Capacity 60 gals
Available Beds Queen
Refrigerator Size 18 cu ft
Convection Cooking Yes
Cooktop Burners 3
Number of Awnings 2
Axle Weight 7000 lbs
Garage Size 13 ft
LP Tank Capacity 60 lbs
Water Heater Capacity 12 gal
Water Heater Type Gas/Electric
AC BTU 30000 btu
TV Info LR 49" LED TV, BR 32" LED TV, Garage 32" LED TV, Ext. LED TV
Awning Info 14' & 16' Power w/LED Lights
Axle Count 3
Washer/Dryer Available Yes
Shower Type Sunken Tub/Shower
Electrical Service 50 amp
For more information, call us at 925-443-0222 or Contact Us
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ManuFacts
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Thank you for taking the time to view and consider Grand Design RVs, where we build every RV to deliver more features and superior value for your dollar, then we back every one of our coaches with a 3-year limited structural warranty.
 
Every Grand Design RV is put through a series of quality inspection gates during the manufacturing process.  Once completed, the unit undergoes a comprehensive final finish inspection before being delivered to our dealer network for you to view or test drive.
 
We deliver the highest quality RVs in the industry, but anything built by humans can be subject to issues.  It’s how those issues are addressed that stands out with Grand Design. We stand behind our products, and stand ready to assist customers whenever needed.
 
At Grand Design our goal is simple...Continue leading the industry with quality products while improving the customer's RV experience before, during, and after the sale.
Happy Daze RV is not responsible for any misprints, typos, or errors found in our website pages. Any price listed excludes sales taxes, registration, tags and delivery fees. Manufacture pictures, specifications, and features may be used in place of actual units on our lot. To preserve the quality and mileage of our coaches, we only do test drives with a qualified offer to purchase.