3 The portico at the front of the main hall of the temple extended the width of the temple, that is twenty cubits,a and projected ten cubitsb from the front of the temple.

Read 1 Kings 6:3 Using Other Translations

And the porch before the temple of the house, twenty cubits was the length thereof, according to the breadth of the house; and ten cubits was the breadth thereof before the house.
The vestibule in front of the nave of the house was twenty cubits long, equal to the width of the house, and ten cubits deep in front of the house.
The entry room at the front of the Temple was 30 feet wide, running across the entire width of the Temple. It projected outward 15 feet from the front of the Temple.