Grate

“Construct for it a grate of bronze mesh, and make a bronze ring at each of the four corners of the mesh.”

“Set the grate beneath the ledge of the altar, so that the mesh comes halfway up the altar.”

“He made a grate of bronze mesh for the altar under its ledge, halfway up from the bottom.”

“At the four corners of the bronze grate he cast four rings as holders for the poles.”