Paul from SWISCO responded:
March 23, 2015
Hello! I'm afraid they don't make an aluminum replacement for the 18-166. There's not much you can do about top sash guides breaking, especially if they have constant exposure to sun. Double check the weight of your sash to confirm that it is 29 pounds. If the spring is stronger than what is necessary, that would also apply above-average strain on the top sash guides, making them break faster.
I also recommend double checking your balance Series. Kinco has always used our Series 385 channel balance, which is the same as the Series 380 except the bottom shoe is 15-004 instead of 15-005. Just make sure. |