Exodus 38:4-5

38:4 He made a grating for the altar, a network of bronze under its ledge, halfway up from the bottom. 38:5 He cast four rings for the four corners of the bronze grating, to provide places for the poles.

Exodus 27:4

27:4 You are to make a grating ¹  for it, a network of bronze, and you are to make on the network four bronze rings on its four corners.

Exodus 35:16

35:16 the altar for the burnt offering with its bronze grating that is on it, its poles, and all its utensils; the large basin and its pedestal;

Exodus 39:39

39:39 the bronze altar and its bronze grating, its poles, and all its utensils; the large basin with its pedestal;

Exodus 38:30

38:30 With it he made the bases for the door of the tent of meeting, the bronze altar, the bronze grating for it, and all the utensils of the altar,

[27:4]  ¹ tn The noun מִכְבָּר (mikhbar) means “a grating”; it is related to the word that means a “sieve.” This formed a vertical support for the ledge, resting on the ground and supporting its outer edge (S. R. Driver, Exodus, 292).