I too purchased their garden window in1997. The bottom of the window is separating. Home Depot said that the window has a lifetime warranty on them and gave me a number to call. The window makers askeed me if there was a bracket put under the window I said no, that Home Depot said you do not use a bracket that the windows are self contained. The contractor who installed this window said it does not call for brackets.This window maker said that they would pay 50% towards the cost of a new window, "some lifetime warranty!" In 1997 no brackets were called for or supplied with the window. Now they say they won't warrant the whole window because no brackets were used.The whole thing is a "crooked scam". The truth is that the glue used in the laminated plywood because of condensation has given away allowing the plywood to separate. Window brackets would not prevent this from happening.