ArtToFrames Collage Photo Frame Single Mat with 9-5x5 Openings with Satin Black Frame and Super White mat. Comes with Satin Black frame, Styrene, Super White mat , backing and a wire hanging set (hardware as shown in the photos). Finished Frame Dimensions: 20" x 20" (Total frame size when hanging on the wall). Top Mat Color: Super White. Comes with 9 - 5x5 openings. (Each opening cut roughly 1/4" smaller then the size listed so it holds in your photos nicely) High quality 4-ply single mat ... Lignin Free, pH-neutral. Bevel Cut Edges.