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R-value
(redirected from Insulation value)

    Also found in: Dictionary/thesaurus, Financial, Wikipedia 0.01 sec.
R-value [′är ‚val·yü]
(engineering)
An index of the ability of a substance or material to retard the flow of heat; higher numerical values correspond to higher insulating ability.
R-value
A measure of the thermal resistance of a material or component.
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