"Then make a small altar out of acacia wood for burning incense.
It must be eighteen inches square and three feet high, with horns at the corners carved from the same piece of wood as the altar.
References for Exodus 30:2
Overlay the top, sides, and horns of the altar with pure gold, and run a gold molding around the entire altar.
Beneath the molding, on opposite sides of the altar, attach two gold rings to support the carrying poles.
The poles are to be made of acacia wood and overlaid with gold.
Place the incense altar just outside the inner curtain, opposite the Ark's cover -- the place of atonement -- that rests on the Ark of the Covenant. I will meet with you there."
References for Exodus 30:6