Thnks again.
I now see the Note about the gang box:
"If installing this kit on a electrical gang box, you may use a different set of screw holes for mounting. Which screw holes you use will depend on the electrical gang box in your installation."
Have Aruba indicated if the AP-220's will mount on a AP-130-MNT-W2 given their similar shapes? I'm midway through a few buildings and the mounts are to be installed by a subcontractor. The 220's comming out have complicated my plans a bit.
Regards,
Shane