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For general delivery, post office box, and rural route/highway contract records, this code will always be "B" (both).: Both of Odd and Even For street, highrise, firm and multi-carrier records, B = Both sides of a street, E = Even side of a street (even-numbered addresses in the range) O = Odd side of a street (odd-numbered addresses in the range).
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Code that identifies the side or sides of a street for which a given address range is applicable.
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