SWISCO - The Replacement Hardware Authority

New sash means... new balance?

A professional from Washington State says:
I am now trying for find more balances. The are for alpine windows;
older ones,
the numbers on them is 26 3 jt cmc-2. They are 28" long.
The old ones can't handle the extra weight from going from single strength units to double strength units. Can you help me?
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Tom from SWISCO responded:
Changing the size of the sash will definitely cause balance issues. Do the balances at least fit well? That is, the length of the metal channel and size of the nylon attachments? If so, do you know what Series they are? Finally, what is the weight of the sash?
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