The top attached of the channel balance was broken on both side and the string was broken on one side. Here is the measurement of the channel balance: non-tilted window 1/2 wide X 28 inch long. The number on the channel is 2730 BSI. The top attached looks like 19-005. I want to replace both channel balance. However, series 350, 351, 385 and 390 are looked the same to me.
- Which channel balance I should choose?
- What type of top attached, rivet I should choose if I want to replace the top attached only?
Thanks.
Maynard
