sill
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sill
Standards
the bottom horizontal framing member of a window assembly
Source - AS 2047-2014: Windows and external glazed doors in buildings
HB50
bottom horizontal member of a window or door frame
See Figure A.39
See Figure A.39
Window or door sills normally project beyond the face of the adjacent wall and are weathered on the top surface to provide for run-off of rainwater.
See also: door sill; window board