PGT channel balance replacement

A home owner from South Florida says:
Hello, I need a new channel balance for a PGT window. Balance is 30" and sash is about 29 pounds. Balance has 29 5 LU CMC 1 stamped on it. Looks like I need a 30" series 385 balance with option 2950. Based on the attached pictures and markings can you please confirm that is the correct balance. Also could you let me know if I order four can I just pay for one shipping charge. Thanks, Peter
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Bob from SWISCO responded:

Hey Peter. It looks like the top attachment has 'wings', or side tabs, while the bottom fitting does not. Is that correct? If so, then I believe this is actually an S395-30. You are correct that, based on your old stamp, you'd select 2950 as the stamp option. And finally, yes, you can order as many of these balances as you need. Just be sure to set the quantity you desire before checking out through the online store. Let me know if you have further questions. 

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