Climate Zone 4B

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A type of climate defined in the ASHRAE 169-2006 standard consisting of Climate Zone Number 4 and Climate Zone Subtype B.

Climate Zone 4B is defined as Dry with IP Units CDD50ºF ≤ 4500 AND 3600 < HDD65ºF ≤ 5400 and SI Units CDD10ºC ≤ 2500 AND HDD18ºC ≤ 3000 .

The following places are categorized as class 4B climate zones: