We have a large Palladian window in our foyer. The window itself is fine. It was replaced about 7 years ago, but we don't have any documentation on the brand of window that was installed. A window washing service broke the grill when they removed it, and it can't be repaired. We would like to replace the grill, but we can't figure out what brand it is. We do know that it is not an Andersen window, as there are no markings or stencils on the window glass or frame. The inside glass measurements are 68 3/4" H (center) by 67 3/8" W. Any info or insights anyone has will be appreciated.