Recording in Progress, Do not Disturb, studio, radio, music, door, room, A4 metal studio door sign . Printed aluminium metal plaque, 20 x 30cm. Would look great in any bedroom, bar, or office for great home wall art. A4 size predrilled with 4 holes so you can fix to the wall or hang with string or ribbon. This sign is printed on quality Aluminium with a sheen finish, rounded corners and 4 holes.