Hubbell Wiring Device-Kellems AA2030PS: This adapter allows for the mounting of Hubbell grounding receptacles on grounded metallic boxes which are installed in concealed wiring systems. It is crucial to ensure that the frame of this adapter is properly bonded to the grounded metallic box using a bonding jumper or the equipment grounding conductor. With this adapter, you can effortlessly mount various Hubbell receptacles, including 20, 30, 16, and 32 Ampere Pin and Sleeve Receptacles and 20/30 Ampere Twist-Lock Receptacles.