For Sale: 2015 Keystone Avalanche 343rs Fifth Wheel, Comfort Package, Whiteout Package, Thermashield 37, Drop Frame, Trail Air Suspension, Base Camp Collection, Sold Surface Countertops, Washer/dryer Prep, Stand Alone Air Mattress, Custom Furniture Package, G-range 5th Wheels / Theodore, Al 2015 Keystone Rv Avalanche 343rs The First Next-generation Fifth Wheel Designed For Today's Family. Avalanche Offers Features, Comforts And Livability For Extended Trips Or Weekend Vacations. With Emphasis On Family Friendly Floorplans, Avalanche Is The Ideal Coach For The Active Lifestyle.,