Merging In Edit Mode

How can I merge in edit mode?
Here is an example of what I am trying to do:


I have this objects that is split up into three in edit mode. How would I go by merging them together so I don’t have double edges and vertices?

Thanks

Try using Mesh -> AutoMerge Editing. It can also be accessed by clicking on the two arrows right to the magnet.

I’ve tried pressing it but nothing really happens :frowning:

AutoMerge Editing will merge vertices that share their location.
Just select the part of the mesh on the right, press G, then Y to transform along the y-axis,
go to a vertex of the other part of the mesh so that you can snap to it.
Then press the left mouse button to confirm.
Afterwards,you should have snapped them together without leaving any edges or doubles.

You can also use to bridge tool on the loops if you want the two parts connected without moving them.