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[RE] Thermal Resistance, R-Value

Residential Code 2015 of Missouri > 2 Definitions > R202 Definitions
  • The inverse of the time rate of heat flow through a body from one of its bounding surfaces to the other for a unit temperature difference between the two surfaces, under steady state conditions, per unit area (h • ft2 • °F/Btu) (m2 • K)/W.
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