What's the right way to extrude this shape?

[spawn]

Hi everybody

I want to extrude this shape 15 units along green axe and 20 units along blue axis.

What I get is a internal face that I only know how to delete with lot of extra steps.

Any recommendation?

This is the file: CADAvaDes11.skp (38.8 KB)

Thanks in advance.

[sdmitch]

I think you are doing it the only way you can. No way to avoid the internal face. Just draw a new line across the junction of the vertical and horizontal faces to separate the hidden face the delete the unneeded edges.

[DaveR]

After the second Push/Pull operation, select all of the geometry. Right click on it and choose Intersect Faces>With Selection. Then erase the edges on the faces.

Frankly, I would probably not draw the bottom part of the bracket until the upper part is completed and avoid creating any internal faces or coplanar edges to deal with at all.

[spawn]

Thank you so much guys
It worked like a charm.