ツーバイフォー工法 こうほうじゃありません
tsūbaifōkōhōjārimasen

Noun
Desu Copula
Negation Auxiliary

The polite negative form of ツーバイフォー工法

1. It is not 2x4 construction.; It's not a 2x4 method.

Negative
Polite
Terminal Form