Ostaco Windows And Doors

The windows they are installed are incredibly beautiful and because of the amount we installed there was a discount offered. Wish they would have allowed to us to determine what kind of window (3 pane, 2 pane, etc) we wanted for each bedroom, but they did do an overall job. They are good at keeping out the cold in the winter (my room is much warmer in winters), and there is a very good warranty on them. Earlier my sister dropped a hammer and it hit the window (putting up xmas decorations) and the window didn't even crack or shatter. Very durable.