[SOLVED]What would be the best way to duplucate these shapes?

Support Modeling
1

I need to duplicate these shapes and move them to the other side of the door. What would be the best way to do that?

Capture.JPG1919×1075 96.9 KB


This is the room Im trying to remodel:

iajoVF1.jpg1168×1081 181 KB

2

Use the mirror modifier, cut the room in half, work on one half and mirror modifier with do the job.

3

Thanks for the quick reply, I tried that but the problem is that the meshes is spereated. I managed to get them somewhat symmetrical with
delta-transorms.