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R Value to U Value Value to U Value Value U Value 1 1.0000 2 0.5000 3 0.3333 4 0.2500 5 0.2000 6 0.1667 7 0.1429 8 0.1250 9 0.1111 10 0.1000 11 0.0909 12 0.0833 13 0.0769 14 0.0714
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