Aftermarket installations or alterations to the original equipment vehicle as distributed by Grand Design RV are not covered by the Limited Base and Structural Warranties. The special body company, assembler, equipment installer, or up-fitter is solely responsible for warranties on the body or equipment and any alterations (or any effect of the alterations) to any of the parts, components, systems, or assemblies installed by Grand Design RV. Grand Design RV is not responsible for the safety or quality of design features, materials, or workmanship of any alterations by such suppliers.