Hubbell ISB4BK Housing Surface Mount, 4 Port, Black: 4-Port Version has ratcheting tabs for adjustable furniture mounting (2.71 x 1.38 furniture opening). Compatible with Hubbell POLYTRAK Raceway Series PP, PL, PW & PB* (*use PB3REDA transition fitting) Attributes Number of Ports: 4 Loaded: NO Gang: 2 Mounting: SURFACE MOUNT Color: BLACK