Hydrolic leveling system. Yearly inspections from RV service departments. Great shape,  well taken care of. Full wall slide, spacious. Big truck tires (22.5) make for a comfortable ride. Retractable power awning with sun shade. We have big, heavy-duty stabilizer shocks and springs. Another nice convenience we dont see anymore  is our bins travel out with the full slide. Easier for access. No trades, or PayPal, or Vemno.