Polytetrafluoroethylene film, non-microporous, in the form of rolls, of a thickness of 0,019 mm or more but not exceeding 0,14 mm, impermeable to water vapour
Mikropoorideta polütetrafluoroetüleenkile, rullides, paksusega vähemalt 0,019 mm, kuid mitte üle 0,14 mm, veeaurukindel