Building Material,High grade and flame-retardant FSK facing for duct wrap for HVAC systems and metal building ... : Characteristic: fire retardant, anticorrosive, easy to laminate, durable. Specifications: a) Foil:7μ b) 3-way scrim c) PE d) Kraft: 50gsm ... ,1.30m4) Roll length: 60,120, 300, 500, 1800, 3000m Foil Scrim Kraft Of Metal Building Material