How to mirror things

Box

L1: Registered
Jul 6, 2016
2
0
I am making spawn room doors and I really want it symmetrical, but I can't just rotate the doors 180 degrees. Is there any way I can flip horizontally.
 

BenCo

L5: Dapper Member
Dec 30, 2015
242
135
To rotate horizontally select the object and then press Ctrl+L
To rotate vertically select the object and then press Ctrl+I
But if you go to the tools section on the top of the screen you can flip the object manually.