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If you zoom in on the right edge, you should see the following:
(Click picture for larger image)
Note that the mesh spacing is smaller near the wall as indicated by the blue circles on the edge.
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Operation Toolpad > Mesh Command Button > Face Command Button > Mesh Faces
Shift left-click on the face and click Apply. The meshed area should look like this after zooming in:
(Click picture for larger image)
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