1)
What was the "Masach Sha'ar he'Chatzer"?
1.
Rashi, Targum Onkelos and Targum Yonasan: It was the curtain that hung on the east side of the Chazer
1
(on the middle twenty Amos ? Rashi)
1
Rashi: Which was fifty Amos wide, and which was closed on the fifteen Amos on the north and south sides, as the Torah stated in 27:14.