High grade and flame-retardant Perforated FSK facing,Foil Insulated material widely for roof structure. Features:to be sealed on glass ... and thermal insulation facing of metal building material. Characteristic: fire retardant, anticorrosive, easy to laminate, durable Specifications: a) Foil:7μ b) 3 ... length: 60,120, 300, 500, 1800, 3000m Perforated Foil Insulated material