I have 2017 Thor Axis 25.4 I bought new from dealer, I asked about levelers and they wanted over $7,000.00 to install, I bought the HWH hydraulic auto level and ordered it from Amazon for under $3,600.00, not a job for a weekend DYI but it can be done, the ones the dealer tried to sell me were all electric and made in China and had a very poor rating, find an independent shop to install them if you go that route and stay away from a Thor Dealer as they will just end up sending it out to be done.
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