1,picture frames and matboard 2,various color and multi openings. 3,professional quality. 4, economic Price. 1. Mat ... core, black core,c ream core mat board3. Lignin free and acid free4. Thickness: 0.5mm--3.0mm5. Bevel cut, ... surfaces and colours9. Professional quality and economic price.10. Purpose:photo frame, paper art, mat frame, mat picture, photo album and needlepoint picture frames and ...