The 2026 Grand Design Influence 3904BH is a large family-focused luxury bunkhouse fifth wheel designed for maximum sleeping capacity, multi-zone privacy, and residential-style comfort in a full-profile, extended-season RV. At approximately 428 in length with a dry weight around 16,000 lbs and a GVWR up to 19,000 lbs, its one of the most spacious and feature-rich bunkhouse layouts in the Influence lineup, built for big families or groups who want separate living spaces without sacrificing high-end finishes.

Inside, the 3904BH is centered around a true dual-zone design, separating living and sleeping areas for better privacy and usability. The rear of the coach features a private bunkhouse suite with multiple bunks, a tri-fold sofa, storage, and its own half bath with exterior entry, making it ideal for kids, guests, or even a second family space. This layout is one of the key reasons the 3904BH stands out in the luxury bunkhouse categoryeveryone gets their own space instead of shared clutter.

The main living area is open and residential in feel, with opposing slide-outs that dramatically expand the interior width, creating a large lounge space for relaxing or entertaining. Theater seating or recliner options face an entertainment center with a fireplace, while large windows bring in natural light and help the space feel even bigger at camp.

The kitchen is designed for full-time functionality, featuring a residential-style 16 cu. ft. refrigerator, 3-burner cooktop, oven, microwave, solid-surface countertops, and a large U-shaped or island-style prep area depending on configuration. A standout feature is the added counter space and storage, which makes it easy to cook for larger groups without feeling cramped.

Up front, the private master bedroom includes a queen bed slide (king optional), large wardrobe storage, and washer/dryer prep, giving owners a true residential retreat. The front bathroom is spacious and features a walk-in shower, porcelain toilet, vanity, and linen storage, with convenient access from the bedroom and main living area.

Built on Grand Designs proven Influence platform, the 3904BH includes laminated fiberglass construction, a fully enclosed and heated underbelly, and upgraded insulation for extended-season and cold-weather camping. Exterior features typically include quad slide-outs, dual power awnings with LED lighting, a 6-point auto leveling system, and pass-through storage, making setup and campsite living much easier despite its large size.

Reasons to Buy the 2026 Influence 3904BH

• True family bunkhouse with private rear suite
• Rear half bath + exterior entry for added convenience
• Spacious main living area with opposing slides
• Residential kitchen with large 16 cu. ft. refrigerator
• Sleeps large families comfortably (up to ~9 depending on layout)
• Front private master bedroom with washer/dryer prep
• Four slide-outs for maximum interior space
• Heated and enclosed underbelly for extended-season use
• Excellent storage throughout the coach
• Premium Grand Design construction and resale value

Why Buy from Lazydays RV Powered by Campers Inn RV

• Large inventory of Grand Design Influence bunkhouse fifth wheels
• Competitive financing options for qualified buyers
• Factory-trained RV technicians and nationwide service support
• Trade-in assistance for easy upgrades
• Full delivery walkthrough and orientation before departure
• Trusted national RV dealership group with long-term customer care