PVC Molded Junction Box, 4 x 4 x 4-In.Electrical PVC Junction Box 4" x 4" x 4" A surface mounted enclosure without entrance hubs which allows multiple conduits to be connected and wire splices made within. Appropriate holes must be cut. Male adapters or box adapters may be used to secure conduit to the enclosure. May be concrete encased or buried but not warranted or listed to be watertight for all circumstances. UL listed CSA approved.