MB4 226a Mavoi Hamefulash (364:1-2)

How do you permit carrying in a mavui that is open on both ends to reshut harabim, karmelit, or if one end opens to a karmelit and one to a reshut harabim. What if the other side opens to a chatzer without an eruv?

A genuine reshut harabim can only be permitted with doors that can be closed at night.