Johns Manville duct board w/ FSK is made from strong glass fibers bonded with a thermosetting resin. Double density male/female edges are pre molded in the board. The exterior surface has a durable, fire resistant Foil-Scrim-Kraft facing.

Duct Board w/ FSK promotes quiet operation, excellent temperature and condensation control. This product will not support microbial growth and is resistant to dust and dire.

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