John Gill Commentary Ezekiel 48:30

"And these are the egresses of the city: On the north side four thousand and five hundred [reeds] by measure;" — Ezekiel 48:30 (ASV)

And these are the goings out of the city
The gates of it, as Jarchi and Kimchi interpret it, by which they went out of it, and into it; and also the sides of it. The Lord here returns to the city again, to give an account of its circumference and name:

on the north side four thousand and five hundred measures ;
the north side of the city measured so many measures; that is, reeds, as Jarchi explains it.