Exodus 38:3-5

Young's Literal Translation

³ and he maketh all the vessels of the altar, the pots, and the shovels, and the sprinkling-pans, the forks, and the fire-pans; all its vessels he hath made of brass.

⁴ And he maketh for the altar a brazen grate of net-work, under its border beneath, unto its midst;

⁵ and he casteth four rings for the four ends of the brazen grate -- places for bars;