Unfortunately I have heard of Alside windows. I will be contacting an atty. next week. I can't even open my windows, the installer tells me some WD40 will take care of the problem. The windows don't fit correctly. I have told the installer to come and get them. Thank goodness I had the forsight to cancel payment on the final payment. It has been 8 weeks and we have not had any cooperation. Wish I had read your posting before obtaining the windows. Good Luck to you!