... wrap of HVAC systems and metal building insulation Features:1) With high tensile strength and bursting strength2) Used as jacket ... more effectively3) Fire Grade: BS476 Class O & Class 1Specifications:1) FSK-R715A:a) Foil: 7μmb) 3-way scrim: ... glued)Fire grade Kraft: 60gsm, natural3) Roll width: 1.0, 1.2, 1.25, 1.30m4) Roll length: 60, 120, 300, 500, ... Foil-Scrim-Kraft Facing- BS476-Class O & Class 1