Exodus 25:17

You shall make a mercy seat of pure gold . Two cubits and a half shall be its length , and a cubit and a half its breadth .

“Make an atonement cover of pure gold—two and a half cubits long and a cubit and a half wide.

And thou shalt make a mercy seat of pure gold : two cubits and a half shall be the length thereof, and a cubit and a half the breadth thereof.