Nothing. It’s included. Our lifetime, fully transferable material and labor warranty will be included with the installation price. Our Lifetime Warranty is the best in the business. You will not find any tricky fine print, escape clauses, etc. Our warranty is good for the life of the RV. This will give you not only piece of mind, but access to a nationwide network of technicians and dealers should any issues arise. The warranty transfers with the VIN# to keep things easy and convenient regardless of who owns the RV in the future.