I first decide on where and how I plan to hang it. Will it be 3M command hooks in the middle or on both ends. Will it be nails? Will it be a rod through the hanging sleeve and a decorative rope from both ends of the rod to a center nail like a picture?
It will need a fairly sturdy rod to go across 45 inches without a sag in the middle. I have a fairly heavy wool wall hanging with a 1/2 inch extendable curtain rod through a narrow casing at the top of my wall handing. The two ends of the rod are sitting on two small nails. This supports the rod nicely and the casing is tight enough that the rod is not visible behind the top of the wall hanging.