Snap on Ceiling Grid Clip, Drop Ceiling Clips, Clip Strip Corp.
Adjustable Sign Holders for Ceiling Danglers or Signage — screengemsinc
Amazon.com : Ceiling Suspended Clear Acrylic Poster Frame Displays 17 x 11-Inch Signs, Double-Sided Display, Slide-in Side Loading - Sold in A Set of 4 : Business And Store Sign Holders : Office Products
Clear Acrylic Hanging Ceiling Poster Frame 14" Wide X 8.5" High Vertical/Portrait. Includes Hanging Hardware
Clear Acrylic Hanging Ceiling Poster Frame 14" Wide X 8.5" High Vertical/Portrait. Includes Hanging Hardware