Hubbell duplex receptacle cover is used for installing 15A and 20A duplex receptacles and duplex communication devices. Included device bracket. Wide range of covers and cover plates accommodate the most demanding applications. Removable cover and cover plates provide easy access to wiring compartment. Pre-cut covers and plates provide quick installation and are available in common configurations. Transition Fitting UL Classified to transition from Wiremold 3000 series metal raceway to Hubbell HBL3000 series metal raceway. Reducer Fitting provides transition from Hubbell HBL3000 series to Hubbell HBL2000 series raceway. Hubbell Handi-Screw eliminates difficult-to-install long screws for faster mounting. Round corner boxes eliminate sharp edges. Boxes have a one-seam construction providing a clean look. Large capacity boxes allows for the installation of 30, 50, or 60A receptacles. Utility box can be used as a tee, cross, junction box or as a branch circuit extension. Ivory color. 4-1/2-inches length.