External Duct Insulation
Formaldehyde-free fiberglass blanket duct wrap with an FSK facing, manufactured with a binder made from renewable plant-based material. (Transitioning to Microlite FSK)

Microlite® EQ FSK Formaldehyde-free™ duct wrap offers superior thermal performance and condensation control in a lightweight, blanket-type insulation with an FSK facing. It is recommended for HVAC system exteriors or surfaces where design parameters prohibit the use of liner or board. Installing contractors prefer Microlite EQ’s bio-based binder for many reasons, including improved handling, easier cutting and less dust. Our manufacturing process ensures consistency during production, which results in reliable product quality. 

R Value: 4.2 (1.5")
Permeance Rating (Facing): 0.02
Recycle Content: 24%
Greenguard: Gold

Available Documents