Photo Frame Collage Mat 9 Opening Mat Fits 11 X 14 - Etsy Canada
Giftgarden Brown Picture Frames with Mat for Multiple Sizes Photos, Four 4x6, Four 5x7, Two 8x10, Assorted Gallery Frame Collage for Wall or Tabletop, Set of 10 : Amazon.ca: Home
ArtToFrames Collage Mat Picture Photo Frame 3 4x5" Openings in Satin Black 32 | eBay
Multi-Opening Matboards and Frames
FUNTRESS 10x14 Picture Photo Frame for Wall Hanging Family Wooden Baby Living Room Document Collage Frame with Mats (10x14 inch, Black) : Amazon.ca: Home
Amazon Photo Mats White 16x20 Collage Picture Mat with Rounded Corners for 15 Photos or Pictures (Matting Only) : Amazon.ca: Home