Channel balance stamp

A quick learner from Fredericksburg VA says:
I have two channel balances ones stamp is 33 5 EV CMC 7 And the other 33 3 CV CMC 7
Looking for what replacement would work
User submitted photos of a window balance.
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Tom from SWISCO responded:
Hello, thank you for contacting us. It looks like you need our S395-34 channel balance with a 3350 option. Let us know if we can help you further.
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