I had 20 windows and 4 entry doors install in my 10 year old home. I cant believe the different in sound and I have notice my heating bill also the install went great except for one small crack in the pane of glass ... ostaco service rep came out and replace this unit in two minutes ... I would recommend ostaco to anyone thinking of replaceing there windows

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Company Response

Hi Jay, thanks for taking the time to review us. it's always very nice to hear from one of our satisfied customers.