Exodus 38:6 (KJV)

And he made the altar of burnt offering of shittim wood: five cubits was the length thereof, and five cubits the breadth thereof; it was foursquare; and three cubits the height thereof.

And he made the horns thereof on the four corners of it; the horns thereof were of the same: and he overlaid it with brass.

And he made all the vessels of the altar, the pots, and the shovels, and the basons, and the fleshhooks, and the firepans: all the vessels thereof made he of brass.

And he made for the altar a brasen grate of network under the compass thereof beneath unto the midst of it.

And he cast four rings for the four ends of the grate of brass, to be places for the staves.

And he put the staves into the rings on the sides of the altar, to bear it withal; he made the altar hollow with boards.

And he made the laver of brass, and the foot of it of brass, of the lookingglasses of the women assembling, which assembled at the door of the tabernacle of the congregation.

And he made the court: on the south side southward the hangings of the court were of fine twined linen, an hundred cubits:

Their pillars were twenty, and their brasen sockets twenty; the hooks of the pillars and their fillets were of silver.

And for the north side the hangings were an hundred cubits, their pillars were twenty, and their sockets of brass twenty; the hooks of the pillars and their fillets of silver.