EATON EZ Box™ represents the first significant change in panelboard box and trim designs in more than a half century. The EZ Box™ has been designed for faster, more secure and safer installations. The new EZ Box™ is provided standard for EATON Pow-R-Line 1a and Pow-R-Line 2a lighting panelboards, as well as the Pow-R-Line 3a and Pow-R-Line 3E mid-range panelboard.