Ezekiel 42:3, 19-20

There was thirty-five feet of the inner courtyard between them and the Temple. On the other side, they faced the stone pavement of the outer courtyard. The rooms were built in three stories like steps and had balconies.

He went around to the west side; it measured eight hundred seventy-five feet by the measuring stick. So he measured the Temple area on all four sides. The Temple area had a wall all around it that was eight hundred seventy-five feet long and eight hundred seventy-five feet wide. It separated what was holy from that which was not holy.