Need Ceiling Mounting Brackets

Sounds ridiculous, but I need 2 FortiAP 221e mounting brackets. I'm a reseller and when I asked support for a part number I could purchase, they referred me to my reseller. Can't find them on any distributor's web site. Does anyone have a couple I could buy or know where I can get them? I removed these from a clients and they were mounted with the drop ceiling brackets. Customer threw away boxes with mounting kits, then sold the business. I got them back....sans mounting kits  Thanks!  Ted