Window channel balances

Quick Learner from Las Vegas
I need to replace 26 9 34 # CALDWELL NN window channel balances. I believe I need 27" series 385 balances but don't know which stamp option to choose and don't want to remove and weigh the windw due to installed interior shutters. I'm thinking you can tell which stamp option I need from the marking I gave you above. Am I correct?
2 Replies
Casey
Casey from SWISCO
SWISCO
Expert
The stamp might mean it's made for a 34 pound sash. I would check the sash weight to be sure by removing it and placing it on a scale.

If it is 34 pounds, select the 2665 stamp option, a pair will carry a window sash weight range of 33 to 36 lbs.
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