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Fiberglass Board

Fiberglass Board Insulation is the most common insulating material for HVAC ductwork.  Buy Insulation Products offers a wide variety of thicknesses (1" to 4"), facing types, and product densities.

  • ASJ Facing: White poly-encapsulated paper jacketing used mostly for interior HVAC ductwork
  • FRK Facing: Foil Reinforced Kraft paper jacketing is used on interior and exterior HVAC ductwork and is used on exterior ductwork in conjunction with an aluminum protective membrane.
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