Chris D Posted April 12, 2012 Share Posted April 12, 2012 Timber sills on windows do not correctly adjust the Structural Opening height. Take a 1200mm high window and add a 50mm timber sill. Both the window assembly and the hole in the wall will measure 1250mm high, but the OIP and Settings dialog both still report 1200mm. NB. Structural Opening is the UK localisation for Rough Opening Quote Link to comment
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