I purchased an 8500 series all vinyl window at Home depot. I wanted a vinyl windows as it is guaranteed for life. After I installed it, I noticed the bottom sash had a busted latch. this apparantly happened in shipping. On both sashes at the bottoms their is about 2" of condensation. I contacted American Craftsman, the lady told me I had either too much moisture in the house or it was installed wrong. I have installed vinyl windows in my basement (Lowes) and they do not have any moisture on them untill it is about 0 degrees out. Other triple tracks in my house do not have moisture on them. I called Home Depot on the latch. They ordered me a brand new sash with a good latch. This did not cure the moisture. I have a feeling this window was dropped during shipment but no one seems to care now. I have 4 more of these same size windows (28x47) to buy yet. I think I'll try Pella in the spring.