Thanks, but these are for high concentration areas like large venues - convention and exhibit halls. In these locations the common practice is to use many APs with very small - pico - cell sizes, which you accomplish by aiming a patch antenna straight down at the floor. That way all the APs on the same channel don't see each other's clear-to-send messages and therefor don't shut down when the nearest AP on the same channel tells a client to send a packet. So I need to use patch antennae. Thats also why the Cisco stadium antenna has such a narrow beam width, you want the coverage area to be as small as possible so you can install more APs closer together, then you will have less people on each AP, so that you can serve a greater number of people at full speed.
I understand... But these are also not meant to be mounted above ceiling. How
Would you survey for high density I eventually you are going to be mounting them in a location that it wasn't surveyed. If you have to, then you must, but you need to find out if they are plenum or not, because that will dictate what you will have to do.
Either talk to your Cisco rep or post this in the mobility community forum.