18 squares	Assembly of 18 squares with 72 clips. 1) Lay 18 squares flat and clip them (fig.4). 2) Insert the socket and the bulb. 3) Flip the assembly (the clips are on the outside of the lamp) 4) Clip A to A, B to B, C to C and so on.
27 x 108 x 27cm

You can use a pencil  to mark the squares with letters and then erase the marks when the lamp is done.
Fold the sidebands into a 90° angle before you start building the lamp.