Check Objects on each side!

Hello there, this is my question, my Object is based on a central object with 4 colliders on each side, i instantiate a object with this side collider but a want to deactivate them for performance, how can i check if aready have a especific object on the side, already try sphere, trigger and other things!!

Please HELP!!!

Your question is kind of confusing. Can you post a pic and try to explain it a little better?