Innissan


Innissan (インニッサン; 一二三) – when translated literally, innissan means “1, 2, 3”. This stands for 1 sun and 2 bu by 1 sun and 3 bu, which amounts to roughly 36 mm by 39 mm. However, nowadays, innissan is the name used for any lumber in the 30 by 40 to 40 by 40 range. Innissan is a multi-purpose lumber, ranging in use from nobuchi to irisumi to shitaji and other framework.

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