Check these out
http://www.portauthority.org/PAAC/Portals/0/Advertising/DEMOcard.pdf
http://www.portauthority.org/PAAC/CustomerInfo/RacknRoll/tabid/267/Default.aspx
(another thread about racks)
http://bike-pgh.org/bbpress/topic/do-pat-bike-racks-freeze-up
There's a video about it somewhere that's really helpful, but I can't find it right now. I'm sure someone will know where it is.