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2026 Keystone Avalanche 366LS
UsedStock #2754143
Listing price
2026 Avalanche 366LS
Other floor plans with a similar body style, feature mix, and price range, prioritizing other manufacturers and brands.
The Keystone Avalanche 366LS puts the kitchen at the back where it belongs in a layout this size, opening up the living area and giving the whole rig a roomy, residential feel. The 100" wide body construction and 6'10" tall summit slides make a real difference day-to-day, and details like a Girard on-demand tankless water heater, solid surface countertops, and a Furrion refrigerator with ice maker push it firmly into the full-timer category. A King bed, dual Coleman-Mach 15K BTU air conditioners, and the Polar Pack four-season climate package mean the Avalanche 366LS is set up for comfort in more than just mild weather. The Lippert Titan hydraulic auto-leveling system with its digital touchscreen takes the headache out of setup, and stackable washer and dryer prep keeps long-term convenience on the table.
Length
40 ft 10 in
Dry weight
13,955 lbs
Sleeps
6
Slideouts
4
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.
Camping World
Oklahoma City, OK
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