ArtToFrames Collage Photo Frame Double Mat with 16 - 4x4 Openings and Satin Black Frame Comes with Satin Black frame, Plexi glass, 2 mats, backing and Hanging hardware set (hardware as shown in the photos) Finished Frame Dimensions: 25" x 25" (Total frame size when hanging on the wall) Top Mat Color: Super White; Bottom Mat Color: Black Comes with 4x4 openings (Each opening cut roughly 1/4" smaller then the size listed so it holds in your photos nicely) High quality 4-ply double mats, Lignin Free, pH-neutral; Bevel Cut Edges