This blind winds down directly against a wall, and has an opaque mat white pvc backing sheet, onto which images can be projected. Sheet size : 1110mm wide x 1480mm drop. Suitable for office, school, presentation and display usage. Use in conjunction with a computer, interactive whiteboard or overhead projector. A real space saver and at a good price. (Please note : This doesn't have a whiteboard plastic oversheet and cannot be written on using drywipe markers, as with the other presentation blinds).