Units of measurement
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Square foot per degree Fahrenheit per watt
Square inch per degree Fahrenheit per watt
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Square foot per degree Fahrenheit per watt
Square foot per degree Fahrenheit per watt — a unit of thermal resistance, indicating the amount of material area (in square feet) required to achieve a 1 degree Fahrenheit temperature change per watt of energy.
Square inch per degree Fahrenheit per watt
Inch² per degree Fahrenheit per watt — a unit of thermal resistance, indicating the amount of material area (in square inches) required to achieve a 1 degree Fahrenheit temperature change per watt of energy.