Commercial buildings may require a thicker wall, where the electrical service panel is flush mounted and the panel box is deeper than the standard 3 1/2-inch wall.

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Commercial buildings often have electrical service panels that are flush mounted and may require a deeper panel box than the standard 3 1/2-inch wall depth found in residential construction. This necessitates thicker walls to accommodate the deeper electrical components.

Commercial Buildings May Require a Thicker Wall, Where the Electrical