I am not sure about finding instructions online, however it was very easy to assemble. I pretty much just looked at the picture and put it together the same way. I suggest just laying out all the pieces out first. Count out all your holes and match the amour of nuts and bolts to use at each hole. Start with the longest piece that looks like a crosswalk or bridge, which is the base. Then attach the the two sets of long strips upwards on either side. To make it stable to work on the rest I simply attached one of the smaller bridge looking pieces to make the top level. Hope that helps.
It is about 6.1 inches, and total height of this plant stand is about 22 inches, hope you can note.Sincerely,Ufine
The stand I received was exactly the same. I assembled mine to look just like the picture. It’s possible that others assembled the tiers to look different