No numbers on it

A quick learner from My house says:
February 15, 2021
Aluminum part is 26"
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Bob from SWISCO responded:
February 17, 2021

If the metal channel is 26", then see our S395-26. To know what stamp option to pick, obtain the exact weight of the window sash that uses these balances. You can then match that exact weight with one of the weight ranges listed alongside each stamp option on the shop page. 
26" Series 395 Channel Balance
26" Series 395 Channel Balance
S395-26
$10.23
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