3660MB Floorplan

Sandpiper Fifth Wheels
The 3660MB has four slides, three on the off-door side and one on the door side. This coach features a queen bedroom in dront with nightstands, a wardrobe, and linen closet, with an adjacent bath that contains a radius shower, commode, and sink. An innovative bunk room that includes a glide sofa with bunk, TV cabinet, and wardrobe is located in the middle of the with unit, with a separate loft above that overlooks the living area and kitchen. The island kitchen features two pantries, a refrigerator, cooktop, oven, and microwave, plus a booth dinette. The living area is located in the rear and features two tri-fold hide-a-bed sofas, overhead cabinets, entertainment system with fireplace, and overhead ceiling fan. Outside there is a bumper mounted swivel gas grill on the rear bumper.
Whether it's just the two of you or the entire family, our 3660MB will fit your needs. This mid bunk loft model gives you all the space you are looking for, without sacrificing living space. The bonus room in the middle provides a haven to sleep, or extra storage for your clothes and hobbies. The 3660MB can transform into anything you can dream of.


Hitch Weight:
2,115 lb.
14,115 lb.
11,659 lb.
2,456 lb.
Exterior Length:
41' 4"
Exterior Height:
13' 4"
Exterior Width:
Fresh Water:
50.00 gal.
Gray Water:
82.00 gal.
Black Water:
52.00 gal.
Awning Size:
GVWR (Gross Vehicle Weight Rating)
– is the maximum permissible weight of the unit when fully loaded. It includes all weights, inclusive of all fluids, cargo, optional equipment and accessories. For safety and product performance do NOT exceed the GVWR.

GAWR (Gross Axle Weight Rating) – is the maximum permissible weight, including cargo, fluids, optional equipment and accessories that can be safely supported by a combination of all axles.

UVW (Unloaded Vehicle Weight)*- is the typical weight of the unit as manufactured at the factory. It includes all weight at the unit’s axle(s) and tongue or pin and LP Gas. The UVW does not include cargo, fresh potable water, additional optional equipment or dealer installed accessories.
*Estimated Average based on standard build optional equipment.

CCC (Cargo Carrying Capacity)** - is the amount of weight available for fresh potable water, cargo, additional optional equipment and accessories. CCC is equal to GVWR minus UVW. Available CCC should accommodate fresh potable water (8.3 lbs per gallon). Before filling the fresh water tank, empty the black and gray tanks to provide for more cargo capacity.
**Estimated Average based on standard build optional equipment.

Each Forest River RV is weighed at the manufacturing facility prior to shipping. A label identifying the unloaded vehicle weight of the actual unit and the cargo carrying capacity is applied to every Forest River RV prior to leaving our facilities.

The load capacity of your unit is designated by weight, not by volume, so you cannot necessarily use all available space when loading your unit.


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