My arches are 3/4" clear plastic tubing, 10 feet long. I have 6 arches. Each contains two 90 led smart strings, One string facing upward, one string facing downward. They have hooks on each end and are held in tension by a piece of green banding with D rings on each end. I will be taking them down in the next few days and will post some pictures.
This next year I will be building some 4 foot icicles using the same materials.
Rick S