Gold - A4 Opera Certificate Photo Picture Frames - 21cm x 29.7 cm Art Poster Holder Wall Mountable Tabletop Display for Home Office Decor Wholesale Bulk Lot Quantity. Suitable for A4 (21 x 29.7cm) Photographs. MDF molding and high-definition GLASS for clarity and image protection. Portrait and landscape display with wall mounting clip. Ideal for home, offices and workplaces.