It would be best if you provide drawing in DXF or STEP format. If you only have picture or PDF format, please see the example for what works.
Traced production section
The closed outline appears here after tracing.
Custom Aluminum Extrusion
Best for profile of custom cross sections; No minimum order
Upload a filled section
Turn a picture of extrusion cross section to quotable DXF
Prefer a DXF or STEP. Pictures and PDFs only work when the metal is filled and dimension lines are not mixed into the outline.