2021 Keystone Alpine 3790FK, The 2021 Keystone Alpine 3790FK is a truly exceptional luxury fifth wheel, setting a high bar for residential comfort, innovative design, and robust construction. As a flagship model in Keystone's prestigious Alpine line, the 3790FK floor plan is a standout, featuring a unique and highly sought-after front kitchen layout that maximizes living space and provides an unparalleled at-home experience for full-time RV living or extended, high-end travel.If you're searching for a late-model used fifth wheel that combines cutting-edge features, an incredibly spacious layout, and a focus on residential amenities, the 2021 Keystone Alpine 3790FK is an outstanding choice in the pre-owned RV market.2021 Keystone Alpine 3790FK Specifications: Explore This Premier Front Kitchen Fifth WheelOverview & Key Features: Innovative Front Kitchen (3790FK): The "FK" denotes its signature feature: a dedicated front kitchen layout. This design utilizes the very front of the fifth wheel for a massive, U-shaped kitchen with extensive counter space, residential appliances, and often large panoramic windows, creating a bright and highly functional culinary hub. This is a dream kitchen for RV cooking. Massive 5-Slide-Out Design: This model typically features an impressive five slide-outs, dramatically expanding the kitchen, living area, and master bedroom, creating an incredibly open, spacious, and residential feel throughout. This maximizes fifth wheel interior space. Mid-Coach Master Bedroom: Features a private mid-coach master bedroom with a comfortable king-size bed (often 70" x 80"), ensuring a restful night's sleep. Residential Amenities: Designed with home-like features throughout, from high-end appliances to luxurious finishes and furniture, for ultimate comfort on the road. Four-Season Capable: Keystone Alpine's robust construction includes superior insulation (tested for extreme temperatures) and comprehensive heating systems for comfortable extended-season RVing, often branded as "Four Season Living". Dimensions & Weights: Exterior Length: Approximately 41 ft 4 in. This makes it a substantial large fifth wheel for serious travelers. Exterior Width: 8 ft 4 in (100 inches). This wide-body construction provides even more interior space. Exterior Height: 13 ft 5 in. Hitch Weight: Approximately 2,905 lbs. Dry Weight (UVW): Approximately 14,140 lbs. Cargo Carrying Capacity (CCC): Approximately 2,860 lbs. GVWR (Gross Vehicle Weight Rating): 17,000 lbs. Axle Count: 2 axles (often heavy-duty 7,000 lb axles, providing robust support for heavy loads). Tire Size: 17.5" H-rated tires (for superior load capacity and durability). Tank Capacities: Prepared for Extended Living & Boondocking Fresh Water Capacity: 66 gallons (generous for longer stays and boondocking). Grey Water Capacity: 78 gallons (large capacity for extensive use, often split into two tanks). Black Water Capacity: 39 gallons. LP Tank Capacity: 60 lbs (two 30lb tanks / 14.2