NOVELTY - The multilayer assembly comprises a first inner layer made from a first composition, a second outer layer made from a second composition, and a third layer adhering to the first layer on the opposite side of the second layer. The second composition is free from titanium dioxide containing additives, and comprises a semi-crystalline polymer as sole polymer component. The semi-crystalline polymer has a heat of fusion of 35 J/g. The second outer layer has a thickness of 12.5 mu m. The third layer is made from a third composition identical to the second composition.    USE - The multilayer assembly is useful: for manufacturing tubes, pipes, cladding, high barrier composite films, sheets, profiles, plaques and hollow bodies (all claimed); for protection of photovoltaic cell modules; for food and pharmaceutical packaging; and as architectural membranes and capstock.    ADVANTAGE - The multilayer assembly is capable of efficiently and rapidly manufacturing the tubes with improved transparency, weatherability and mechanical properties.    DETAILED DESCRIPTION - The multilayer assembly comprises a first inner layer made from a first composition, a second outer layer made from a second composition, and a third layer adhering to the first layer on the opposite side of the second layer. The second composition is free from titanium dioxide containing additives, and comprises a semi-crystalline polymer as sole polymer component. The semi-crystalline polymer has a heat of fusion of 35 J/g. The second outer layer has a thickness of 12.5 mu m. The third layer is made from a third composition identical to the second composition. The multilayer assembly produces the film by assembling the multilayer assemblies using an adhesive comprising epoxy or urethane glues onto a thin layer of a high barrier material coated onto polyethylene terephthalate or polyethylene naphthalate films. INDEPENDENT CLAIMS are included for:    (1) a method for manufacturing the multilayer assembly; and    (2) a method for protecting a photovoltaic module.