Pcs a4 frame. you can use a4 size for your document diploma picture and photos. good quality material smooth cutting and robust assemble. easy content exchange on flexible nails.2mm real glass used. back protection is hard corrugated. concrete nail for wall asmak will also be sent. internal size of frames is 21x29,7cm. the thickness of the frames is 2cm. material: laminated and vertically available in wall. Improved version for clearer understanding and better search visibility. Suitable for users seeking detailed and reliable product information.