A connector is characterized by comprising a T-shaped main body, three connecting components and two connecting tubes, wherein the connecting components are arranged on one surface of the main body and located at three endpoints of the T-shaped main body. Each connecting component comprises a concave groove body and a connecting column which is arranged in a cavity of the concave groove body, wherein a gap exists between the connecting column and the inner wall of the concave groove body. The two connecting tubes are arranged between two connecting components at the bottom of the T-shaped main body side by side. Each connecting tube penetrates through the main body. Connecting holes are formed in the other surface of the main body.

A connector is characterized by comprising a T-shaped main body, three connecting components and two connecting tubes, wherein the connecting components are arranged on one surface of the main body and located at three endpoints of the T-shaped main body. Each connecting component comprises a concave groove body and a connecting column which is arranged in a cavity of the concave groove body, wherein a gap exists between the connecting column and the inner wall of the concave groove body. The two connecting tubes are arranged between two connecting components at the bottom of the T-shaped main body side by side. Each connecting tube penetrates through the main body. Connecting holes are formed in the other surface of the main body.

A removable coupling device and method for coupling panels of a modular panel system includes a at least one cooperative housing portion defining a housing recess configured to receive an associated frame of an associated panel and a rotational locking member movably disposed on the at least one cooperative housing portion to selectively lock an angular position between the at least one cooperative housing portion and the associated frame. The rotational locking member axially movable between a first axial position wherein the rotational locking member prevents relative rotation between the at least one cooperative housing portion and the associated frame and a second axial position wherein the rotational locking member allows relative rotation between the at least one cooperative housing portion and the associated frame.

A bundle spacing device having a first pair of opposing surfaces spaced apart from each other a first distance and a second pair of opposing surfaces spaced apart from each other a second distance, different than the first distance, and generally perpendicular to the first pair of opposing surfaces. The bundle spacing device is configured such that bundles can be coupled to the bundle spacing device in a first position or a second position. The bundle spacing device can also have a first passage extending along a first axis, a second passage extending along a second axis that is perpendicular to the first axis, and a third passage extending along a third axis that is perpendicular to the first axis and parallel to the second axis.

A joint assembly includes a first container portion, a second container portion, a band strip, and a fastener. The first container portion has a first flange including a first sealing surface and a first outer surface. The second container portion has a second flange including a second sealing surface and a second outer surface. The second sealing surface is configured to cooperate with the first sealing surface to form together a sealed connection. The fastener is configured to attach the band strip to one of the first and second container portions. An inner surface of the band strip is configured to engage at least one of the first and second outer surfaces such that the sealing surfaces of the first and second flanges are fixed with respect to one another when the band strip is attached to at least one of the first and second container portions.