12x36 inch Picture Frame, Single Frame - Black Gallery style side loading frame. Assembly is required. High precision components snap together quickly and without tools. Frame Kits include 1/8" thick MDF backing panel, 0.040" thick clear PET facing panel and molding set with concealed corner connectors for assembly and hanging. Moldings are 3/8 inches wide ABS plastic with a metallized mylar surface finish which is virtually indistinguishable from metal. For 12x36 inch images. Outer Dimensions are 12.375x36.375 inches. Visible size is 11.25x35.25 inches Total frameable thickness (image + optional matte ) is 3/16 inch.