Your image will look spectacular mounted
on a 3 mm-thick aluminium composite material.
Aluminium composite material is a type of flat panel
consisting of two thin aluminium sheets
bonded to a solid polyethylene core.
They have superb surface flatness.
Even panels larger than B0 (1030 x 1456 mm)
will not warp or buckle.
Edge color : white
White aluminium, 3 mm-thick
Edge color : silver
Silver aluminium, 4 mm-thick
When hanging on a wall, attach a wooden hanger to the back. Screw eyes & string can be attached as an option.