I got loewen windows to replace a sealed unit from a round top window that failed. First this is the third time it as failed in twenty years while one unit should last that long. They should have the measurements on record from the last times they came out but did not. November it was ordered and Ross told me in six to eight weeks it would be installed but it took till May. Poor communication over winter and I was always at the back of the list. When it was installed the unit was smaller and they put a lot of silicone around to cover gap. They are willing to replace the window but I do not want them back.