tension bar?

A contractor from FL says:
? 22-9hb5cmc left side of impact window. I need one. Can you help? This is in my home.
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Bob from SWISCO responded:

This appears to be a Series 380 or Series 385 Channel Balance. The only difference between these two balances is the depth of the bottom nylon shoe, or the 'heel-to-toe' measurement, so compare both with your old hardware to see what matches best. To know what length to select, measure the metal channel; do not include the nylon fittings in this measurement. If your stamp reads 22-9, then likely the channel is 23" long, but please confirm. Finally, you'll need to choose a stamp option, which denotes the strength of the balance you're using. Your old stamp 22-9 is from an outdated rating system. To know what stamp option to select, obtain the exact weight of the window sash, then match that exact weight with one of the weight ranges listed alongside each stamp option on the shop page.

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