Each pillar was eighteen cubits tall. The bronze capital atop one pillar was three cubits high, with a network of bronze pomegranates all around. The second pillar, with its network, was similar.

1 Kings 7:15
He cast two pillars of bronze, each eighteen cubits high and twelve cubits in circumference.

Jeremiah 27:19
For this is what the LORD of Hosts says about the pillars, the sea, the bases, and the rest of the articles that remain in this city,

Jeremiah 52:21
Each pillar was eighteen cubits tall and twelve cubits in circumference; each was hollow, four fingers thick.

Jeremiah 52:22
The bronze capital atop one pillar was five cubits high, with a network of bronze pomegranates all around. The second pillar, with its pomegranates, was similar.

The height of the one pillar was eighteen cubits, and the capital on it was brass: and the height of the capital three cubits; and the wreathen work, and pomegranates on the capital round about, all of brass: and like to these had the second pillar with wreathen work.