In plane of wall?

Hi, what exactly does ‘in plane of wall’ mean? I understand it means ‘horizontally’. Is this correct? Many thanks, Torsten[YSaerTTEW443543]

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The plane of the wall refers to all directions really. Horizontal, vertical and diagonal.

A well built wall will only be true when all faces are accurately aligned.

Torsten does this have something to do with your window project?

Could it refer to ensuring that the prepared opening is perfectly square and level – thus as kitos points out being true (a term used in construction) on all sides. In other words, if the plane of the wall (the flat surface of it) is at a specific horizontal and vertical angle that whatever you are installing into it would have to precisely match those angles.

Hi Bill and Drew, thanks a lot for your explanations. Yes, I came across the phrase in a louver window product description.[YSaerTTEW443543]

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