Treasury of Scripture
the porch The length of the porch was twenty cubits, the same as the breadth of the temple, and the breadth eleven cubits, that is, one cubit more than in Solomon's temple. Two bivalve, or folding doors, each leaf of them being three cubits wide, seem to have formed the entrance; which, with five cubits, perhaps of brick or stone work, one each side, called `the post of the porch' amount to sixteen cubits; and the other four cubits may be supposed to have been the distance from these posts to the outside walls of the temple.
1 Kings 6:3 And the porch before the temple of the house, twenty cubits was the length thereof, according to the breadth of the house...
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2 Chronicles 3:4 And the porch that was in the front of the house, the length of it was according to the breadth of the house, twenty cubits...