2018 Shasta Oasis 26DB, SOLD! Very Clean Used Bunkhouse Travel Trailer! 2018 Shasta Oasis 26DBLEADING VALUE IN THE RV INDUSTRY. The Oasis has all you need for an impressive home base. A full galley kitchen with a 3 burner cooktop, residential 60/40 sink, a 6 cubic foot refrigerator, and a 6 gallon gas DSI water heater. Outside there's pass-through storage, and front diamond plate rock guard to make your life easy. When it's finally time to sleep, enjoy the comfortable 60" x 74" queen bed, with reading lights and wardrobes. Oasis from Shasta is the value leader for all your travels!