1.1 This specification covers extruded sheet and film in thicknesses from 0.015 to 0.25 mm (0.0006 to 0.01 in.).1.2 The values stated in SI units shall be regarded as the standard.The following precautionary statement pertains only t This specification covers four types of polychlorotrifluoroethylene extruded plastic sheet and film: Type I - a transparent film with high and low moisture vapor transmission rate; Type II - a dimensionally stable transparent sheet and film with low mo