Display your achievements, certifications and memories with our framed single opening mats Complete framed matting kit includes: picture frame, double matting, glass, rigid black backing and pre-attached stamped hanging hardware Double matting has .25 inch reveal. Mat opening is designed to fit an 8.5 x 11 inch document. There will be approximately quarter inch of matting overlapping the document on each side (actual mat opening is 8 x 10.5 inches). The overlap is necessary to prevent the document from falling through the mat opening. Frame moulding is 1 inch wide; black; smooth finish; wood composite Each mat is .05 inches thick; cream core; pH neutral; bevel cut openings