... aluminum cladding, Interlocking meeting rail-- very high security and wind load ratings.4. High Performance Sill. High backed sill and unique design reduce ... & Nylon &Galvanized & SS WINDOW SCREEN .It is also called fiberglass window screen, fiberglass screening, insect screen, mosquito screen, retractable window screen, bug screen, window screen, door screen, patio screen, porch screen ...