ArtToFrames Collage Photo Frame Double Mat with 1 - 8x10 and 2 - 4x6 Openings and Satin Black Frame Comes with Satin Black frame, Glass, 2 mats, backing and Sawtooth Hanger (hardware as shown in the photos) Finished Frame Dimensions: 16" x 21" (Total frame size when hanging on the wall) Top Mat Color: Super White; Bottom Mat Color: Black Comes with 8x10 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