Ezekiel 40:48-49

48Then he brought me to the entry room of the Temple. He measured the walls on either side of the opening to the entry room, and they were 8-3/4 feet thick. The entrance itself was 24-1/2 feet wide, and the walls on each side of the entrance were an additional 5-1/4 feet long.

49The entry room was 35 feet wide and 21 feet deep. There were ten steps leading up to it, with a column on each side.