This collage Picture Frame comes with (1) Espresso Frame, Glass, 2 mats (Super White top mat and Black bottom mat), Cardboard backing and a Saw-Tooth hanger (not attached) photos. The frame is made of MDF material. This frame holds 4 - 4x4. Final dimension of product when hanging on the wall is 15x15x0.7500 inches. Frame is ready to hang with the exception of the hardware not being attached. This allows you to attach the included hardware for Horizontally or Vertically viewing. Frame is CA Prop 65 compliant.