This projector screen can be easily attached to steel surfaces using magnets.
Considering the height of the school chalkboard (H47.2 inches (1,200 mm)), the height is 44.3 inches (1,130 mm) (bar height is 46.5 inches (1,180
The surface is a matte dry erase film material that can be written on and removed with a dry erase marker pen.
The reverse side is a soft, thin, lightweight magnetic sheet material.
The sheet itself has an aluminum bar and a core material that prevents the sheet from bending when attaching to a chalkboard.
When not in use, it can be easily stored with the included winding pipe.
Marker pen (red, blue, black), eraser, and tray included.

The short-focus projector is compatible with flat chalkboards or walls.

Adjust the rolled sheet vertically and attach to the chalkboard
The sheet is wrapped on a cylindrical winding pipe, so it can be attached to the chalkboard without bending.
When you start to stick the sheet, the core material on one side prevents the sheet from bending or peeling off.
There is an aluminum bar on the other side, so it can be attached firmly as well.
If you want to remove the sheet, install the winding pipe on the aluminum bar and place the winding pipe to the core for smooth retrieval.
■Size: External Dimensions (W x D x H): 68.9 x 0.5 x 46.5 inches (1750 x 13 x
Screen Display Size (W x H): 68.1 x 44.5 inches (1730 x 1130
■Weight: 6.5 lbs (2.95 kg).
■ Packaging: 1 piece/3.0 x 3.0 x 55.4 inches (75 x 75 x 1390 mm), 7.9 lbs (3.26 kg).
■Material: Surface: PET (Polyethylene Terephthalate) sheet, Back: Magnetic sheet, Aluminum bar: Aluminum, polycarbonate, winding pipe: ABS resin.
■ Set Includes: Main unit, marker pen (red, blue, black), eraser, tray.