What does clear opening mean?
Ava Hall
Updated on March 12, 2026
1. With the window open, net clear opening is the size of that open space. 2. 2003 IRC Section R202 Grade Floor Opening is defined as “A window or other opening located such that the sill height of the opening is not more than 44 inches above or below the finished ground level adjacent to the opening”.
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Then, what is a clear opening?
Clear opening width is measured between the face of the door and the stop on the strike jamb, with the door open 90 degrees. In many cases, swing-clear hinges may be used to increase the clear opening width, by relocating the 90-degree position of the door.
One may also ask, what is the clear width of a 36 door? For example, a 36” door leaf is typically assumed to provide 33” of clear width.
In this regard, what is the minimum clear door opening?
32 inches
What is the minimum internal door width?
The minimum clear opening width of any doorway within a dwelling, when the approach to the door is 'head on', is 750mm.
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