Parts are stamped 28 3 IO CALDWELL. Actual length of metal channel is 29".
2 Replies
Tom from SWISCO
Nov 14, 2017 10:21 am
Depending on the depth of the bottom shoe, this is S351-29 or S390-29. Measure as shown below. The 1" shoe is for the Series 351 and the 1-1/8" shoe is for Series 390 balances. Then, consider a 2830 stamp option, for a window sash between 16 and 23 pounds.
Comparison of 15-001 & 15-002
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