TriRemesh with different lenght on same mesh

I’m new to grasshopper and I have a quick question on my mesh. I Couldn’t find any solution on the internet so I’m hoping to get one here on this website.,
I have a SubD modelled on rhino and I made it to a mesh in grasshopper. I want to tri-remesh it but with different lengths on different parts. The middle part should have a length of ca. 150 and the rest of the mesh should have a length of ca. 300 (9.7 KB)


Thank you, i was trying for hours!