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Bob from SWISCO responded:
April 4, 2019
Hello there. Looks like both sets of balances are either our Series 380 or Series 385 Channel Balances. The only difference between these two Series is the 'depth' of the bottom nylon shoe. With the Series 380 the depth of this nylon shoe is 1", whereas with the Series 385 it is 1-3/32". Compare with your own balances and see what is best. Once you know which balance Series you have, choose the lengths you need (28" and 31", respectively). Then you must choose a stamp option. For the balances that are 28" long, you will need a stamp option of 2740, which is for a window sash in the weight range of 19 through 26 lbs. For the 31" long balances, choose the stamp option of 3020, which for a sash weight range of 12 through 16 lbs. Let us know if you have any questions. |
