2026 GRAND DESIGN MOMENTUM M-CLASS 392M

Specifications and Features:

• Exterior Dimensions:

  • Length: 45' 11"
  • Width: 8' 5"
  • Height: 13' 6"
  • Interior Height: 8' 5"

• Weights:

  • Dry Weight (UVW): 16,982 lbs
  • Gross Vehicle Weight Rating (GVWR): 22,500 lbs
  • Hitch Weight: 3,382 lbs

• Capacities:

  • Fresh Water: 140 gallons
  • Gray Water: 104 gallons
  • Black Water: 52 gallons
  • Propane: 60 lbs (two 30 lb tanks)
  • Fuel Tank: 60 gallons

• Sleeping Capacity: Up to 9 people

• Slideouts: 3

• Garage Size: 17 feet

• Appliances:

  • Refrigerator: 20 cu. ft. stainless steel
  • Water Heater: On-demand tankless
  • Furnace: 35,000 BTU
  • Air Conditioning: 45,000 BTU

• Construction:

  • Body Material: Aluminum
  • Sidewall Construction: Fiberglass
  • Floor R-Value: R-45
  • Wall R-Value: R-11
  • Roof R-Value: R-40
  • Slide Room R-Value: R-11

• Running Gear:

  • Axles: 3
  • Wheel Size: 17.5 inches
  • Tire Size: ST215/75R17.5R LRH

• Exterior Features:

  • Awnings: Two power retractable (16' and 18') with LED lights
  • Exterior Color: Optional full-body paint schemes available
  • Exterior Ladder: Yes
  • Exterior Shower: Yes
  • Pass-Thru Storage: Yes

• Interior Features:

  • Available Beds: Queen (option for King)
  • Cooktop Burners: 3
  • Shower Size: 48" x 30"
  • TV Info: LED TVs; 49" in living room, 32" in garage
  • Washer/Dryer Prep: Yes

• Electrical:

  • Electrical Service: 50 amp
  • Number of A/C Units: 3

• Additional Features:

  • Ramp Door/Patio: Yes
  • L-Shaped Sofa with Recline: Yes
  • Overhead Loft Bed: Yes
  • Hybrid Desk/Dinette: Yes
  • Optional Half Bath in Garage: Yes
  • Optional 3rd A/C: Yes
  • Optional 6K Watt Generator: Yes
  • Optional Exterior Entertainment Center: Yes
  • Optional Rear Aluminum Deck System with Rear Power Awning: Yes
  • Optional Upgraded H-Rated Tires with 17.5" Wheels: Yes
  • Optional Weather-Tek Insulation Package: Yes