@mont1228 

Hey, look at here, fantastic answer, https://community.tp-link.com/en/business/forum/topic/633472

  @mont1228 

You also need to take into account its IPXX rating and understand that the rating is based on vertical mounts.  I see no issue from a dry performance perspective with a horizontal mount, but if it's directly exposed to weather or water, then you need to pay attention to how you protect a custom mounted device from moisture ingress.