I ordered new windows and they were not the same size as my old windows. There was a 1/2 gap around the side and top of the diningroom window. They used insulation in fill in the gaps around the windows and installed trim around the inside and outside of the windows. The trim looks horrible on the outside of my house. I didn't have trim around my old windows. It has screwed up the appearance of my house. The first installer that came to install the windows knew the windows were not the right size and did not order new windows. He was going to use brick mortar to make them fit. I will never have Lowe's do anything to my house again.