A junction box, comprising a housing having an open top and a closed bottom, a cover, arranged to secure to the open top of the housing, a flexible casing having four side members arranged to sealably surround the housing, an outwardly extending shelf fixedly secured to an outside surface of the four side members of the flexible casing, and, a flexible rim fixedly secured to a top surface of the shelf forming a pair of oppositely arranged V-shaped channels on a bottom surface of the shelf.