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External Duct Insulation

To provide sheet metal ducts with more thermal insulation, Johns Manville fiber glass external duct wraps come in a variety of sizes, thicknesses and with or without facings for vapor retardation. All have a high tensile strength yet are easy to manipulate, cut to size and install. They provide greater energy efficiency and more consistent comfort for residential occupants.

Microlite® EQ

Microlite® EQ Formaldehyde-free™ duct wrap insulation is a lightweight, highly resilient, blanket-type thermal and acoustical insulation made of glass fibers, bonded with a thermoset resin. (more ...)

Microlite® XG™

Microlite® XG™ Formaldehyde-free™ duct wrap insulation is a light weight, highly resilient, blanket-type thermal and acoustical insulation made of glass fibers, bonded with a white, formaldehyde-free resin. (more ...)

Microlite® Standard

Manufactured with a unique flame attenuated fiberizing technology, Microlite® Standard duct wrap products have high tensile strength and are available in various densities, widths, thicknesses and roll lengths and with a vinyl facing option. (more ...)

800 Series Spin-Glas®

800 Series Spin-Glas duct and equipment insulation is manufactured from inorganic glass fibers bonded together with thermosetting resin. 800 Series Spin-Glas is available plain or faced in a variety of densities for use on systems which operate up to 450°F (232°C). (more ...)