Access windows in horizontal bar section of an electrical meter center

An electrical meter center comprising:

• a horizontal bar section comprising horizontal bus bars, the horizontal bar section defining a first connection section for the horizontal bus bars and a second connection section for the horizontal bus bars, the second connection section being laterally distant from the first connection section;
• and
• a wall panel assembly for covering a horizontal bar section of an electrical meter center, the wall panel assembly comprising:
• a wall panel vertically mounted within the electrical meter center in front of the horizontal bar section, the wall panel comprising an access window for accessing the horizontal bar section;
• an access window panel selectively mounted to the wall panel to at least partially close the access window thereby providing selective access to the horizontal bar section, wherein the access window comprises a first access window and a second access window;
• a first flange disposed about one exterior edge substantially above the first access window such that the first flange extends perpendicularly from the wall panel and extends towards the horizontal bar section when the wall panel assembly is installed within the electrical meter center;
• and
• a second flange distant from the first flange, disposed about the one exterior edge as the first flange and substantially above the second access window such that the second flange extends perpendicularly from the wall panel and extends towards the horizontal bar section when the wall panel assembly is installed within the electrical meter center.