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Duct Insulation

Bill Kibbel

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This duct insulation looks just like the old asbestos Air-Cell and Asbestocel, commonly found on old steam piping systems and coal furnace ducts. This was probably installed when central forced-air heating was installed in this home in 1975. It is on 6" ducts.

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How late was asbestos duct insulation available?

Could they have manufactured this type of insulation without asbestos felts?

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