Ordered 12 replacement window and only got 4 that appear to be good. 3 came in the wrong size and 5 were defective from the factory. Called customer service due to problem where both windows. Rep spoke with very strong accent which required me to ask her to repeat herself several times. She also seemed to have a difficult time understanding me when I stated the problem exactly as I stated it above. A week later I called the company, told what happened and still no call from either customer service or installer. For the price, the quality, customer service and sales it appears to be a huge frustration.