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Condition: New
Exterior Length: 3 ft 8 in
Sleeps: 4
Number of Slide Outs: 3
Fresh Water Tank Capacity: 140 gal
Stock Number: 338373
Description: NEW 2026 GRAND DESIGN MOMENTUM M CLASS 399M – 338373
Grand Design Momentum fifth wheel toy hauler 399M highlights:
Front Private Bedroom...
Updated: Friday, August 21, 2026 03:32 AM
Seller: General RV Center - Virginia
