What is the clearance from the wall to the unit for air flow?

Thank you for your question. The arms of this outdoor wall mounting bracket are 18 1/4" long. Therefore, the distance between the outdoor condenser and the wall will vary depending on the depth of the outdoor condenser. Most condensers are anywhere between 13 and 16 inches in depth. For instance, if you have a condenser that is 14" deep, then you will have a clearance between the wall and the unit of 4 inches. For more assistance, please give us a call.