Arcana Coelestia # 9507
9507. 'Two cubits and a half shall be its length' means all so far as good is concerned. This is clear from what has been shown above in 9487.
Exodus 25:12
12
You shall cast four rings of gold for it, and put them in its four feet. Two rings shall be on the one side of it, and Two rings on the other side of it.