Product Description:
----Roll up/down screen for school and seminar use,
----The standard design of the screen is for wall or ceiling mounting.
Screen surface
----Screen surface on fabric base;
----Black border:L, R, T, B, stand for Left, Right, Top, Bottom;
----1:1 Size up to 240cm,Only 3cm for L & R;
----Size bigger than 240cm,Only 5cm for L & R;
----4:3 Size up to 240cm,3cm for L & R & B, 5cm for T;
----Size bigger than 240cm,5cm for 4sides;
----16:9 Size up to 240cm,25cm T and 3cm for L, R, B;
----Size bigger than 240cm,25cm T and 5cm for L, R, B;