Dimensions:

• Length: 41 feet 8 inches (12.7 meters)
• Width: 8 feet (2.4 meters)
• Height: 13 feet 4 inches (4.1 meters)
• Interior Height: 6 feet 8 inches (2.0 meters)

Weight and Capacities:

• Dry Weight: 13,812 pounds (6,269 kilograms)
• Payload Capacity: 3,468 pounds (1,572 kilograms)
• Hitch Weight: 2,820 pounds (1,279 kilograms)
• Gross Vehicle Weight Rating (GVWR): 17,280 pounds (7,834 kilograms)
• Fresh Water Capacity: 66 gallons (249.8 liters)
• Gray Water Capacity: 88 gallons (333.1 liters)
• Black Water Capacity: 49 gallons (185.5 liters)

Sleeping Capacity: The 2022 Keystone Montana 3781RL can sleep up to 4 people comfortably.

Construction:

• High-gloss fiberglass exterior
• Powder-coated I-beam frame
• Aluminum-framed sidewalls, floor, and roof
• R-11 insulated sidewalls, R-38 insulated roof, and R-21 insulated floor

Interior Features:

• Master bedroom with a king-sized bed and under-bed storage
• Residential-style furniture and theater seating
• Electric fireplace
• LED HDTV in the living area
• Bluetooth stereo system with DVD player
• Air conditioning and heating system with dual zone control

Kitchen:

• Residential-size stainless steel refrigerator
• Three-burner range with oven
• Microwave
• Kitchen island with double sink and high-rise faucet
• Solid surface countertops

Bathroom:

• Residential-size shower with seat
• Porcelain toilet
• Vanity sink with mirrored medicine cabinet

Exterior Features:

• Power awning with LED lighting
• Outdoor speakers
• Heated and enclosed underbelly
• Rear ladder
• Dual pane frameless windows

Please note that these specifications are based on general information available for the 2022 Keystone Montana 3781RL. It's always recommended to refer to the manufacturer's official documentation or contact a Keystone dealer for the most accurate and up-to-date information.