Install junction box with the border close to, but the junction box must not reach the aluminum edge of the bounding box. Junction box edges shall not overwhelm pinout
Mounted junction boxes can be infinitely close to the border, but the junction box must not reach the edge of the aluminum frame. Lead edge junction box must not overwhelm
A good junction box can be infinitely close to the border, but it can not reach the edge of the aluminum frame. The edge of the junction box is not an overwhelming lead wire