Exodus 38:7

4 And he made for the altar a grating of network of brass, under the ledge round it beneath, reaching halfway up.

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

6 And he made the staves of acacia wood, and overlaid them with brass.

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

8 And he made the laver of brass, and the base thereof of brass, of the mirrors of the ministering women that ministered at the door of the tent of meeting.

9 And he made the court: for the south side southward the hangings of the court were of fine twined linen, a hundred cubits;

10 their pillars were twenty, and their sockets twenty, of brass; the hooks of the pillars and their fillets were of silver.