Farmhouse sink, loft
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2026 Forest River Sandpiper 3990FL
NewStock #048423
Listing price
2026 Sandpiper 3990FL
Other floor plans with a similar body style, feature mix, and price range, prioritizing other manufacturers and brands.
Length
43 ft 6 in
Dry weight
12,439 lbs
Sleeps
8
Slideouts
5
The 3990FL is built around a front living room that actually feels like one. Panoramic windows, a fireplace, and a 50" smart TV anchor the space, while the kitchen earns its keep with a farmhouse sink, solid surface countertops, a gas cooktop, and a proper island. A full loft with dedicated stairs adds real sleeping space without the awkwardness of a ladder, and the rear King bed comes with a walk-in shower and enough slide-out real estate to make the bedroom feel residential. Practical touches like an automatic leveling system, 200W roof solar, washer/dryer prep, and dual ducted air conditioners show this rig is set up for extended stays. Not just weekends.
Many factors play into a unit's listing price and what you should pay. This guide provides a ballpark estimate, but it does not factor in your exact scenario or how different listings are equipped.
There may be room for price negotiation.
Unlock pricing insights with RV Envy Pro →$63,995 – $78,999
This unit has been on the lot longer than 120 days.
When was this unit listed?This unit ranks near the lowest priced for new units in this model year.
From the dealer's listing
Forest River Sandpiper fifth wheel 3990FL highlights:
Shower with a Seat
Outside Storage
Theater Seating
Kitchen Island
Upper Loft
Wow! Check out this fifth wheel with a full loft for the little ones with two bunk mats, two wardrobe bookcases and a wardrobe/cabinet for ample storage. The main floor includes five slides for maximum space, a front living area with dual hide-a-bed sofas, plus an entertainment center with a 50" flat screen TV for movie nights! Once your guests have converted the living room to their bedroom at night, you can take the rear private bedroom. There is a king bed slide out here, a wardrobe, plus a closet with washer and dryer prep for full-time living. The full bath is easily accessible for everyone, and the middle kitchen will be a favorite with the chef of your group. Here, you'll find a 12V refrigerator, an island, tons of counter space, plus a hutch to display nice dishes, and a pantry for dry goods. Don't let this fifth wheel slip away!
You will find the perfect balance of size, space, features, and luxury with any one of these Forest River Sandpiper fifth wheels! They are constructed with a welded aluminum framed vacuum bonded laminated superstructure, a cambered powder coated frame with rust prohibitor, and a fully enclosed underbelly for added protection against the elements. The large tinted windows come with a 80/20 UV prohibitor or you can choose the optional dual pane windows. Some hassle-free amenities include a 60k BTU on-demand water heater, full coach water filter system, tire pressure monitor system, and an electric leveling system! Inside, you'll enjoy stainless steel appliances, solid surface countertops, Beachside Sundance linoleum, recessed residential lighting, and many more comforts!
Greenlawn RV
Lockbourne, OH
Sells faster than 19% of Ohio RV dealers
Compared with 29 dealers in Ohio
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The listing price on this unit has changed 1 time.
