CertainTeed Corp.

Duct Board features airstream facing surface.

Duct Board features airstream facing surface.

ToughGard(TM) Fiber Glass Duct Board can operate at air velocities up to 5000 fpm. Composed of resin bonded glass fibers, duct board can be fabricated into square, rectangular, or multi-sided duct sections. It is designed for systems that operate at temperatures up to 250Â-

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