Albert Barnes Commentary Ezekiel 41:23-25

"And the temple and the sanctuary had two doors. And the doors had two leaves [apiece], two turning leaves: two [leaves] for the one door, and two leaves for the other. And there were made on them, on the doors of the temple, cherubim and palm-trees, like as were made upon the walls; and there was a threshold of wood upon the face of the porch without." — Ezekiel 41:23-25 (ASV)

See the marginal reference (Ezekiel 41:25).

Thick planks - Others render it: leaves in wood .