Change size when placing structure?

I made a terminal that works as a transmitter. I used the transmitter files. I have a problem when placing the item from the inventory, even tho the terminal displays on green when selecting where to place the structure, it still requires the same space around it as if it still was a tek transmitter.

How can i also reduce this so it can be placed closer to terrain/other stuff?

And btw, even tho i marked it as a base player engram, and i spawn with it learned, craft icon is not appearing. If i disable auto-learn engram, and manually learn it i get the crafting icon on inventory.