Looking for some window balances

A home owner from Mount Laurel, New Jersey says:
May I have pricing for the followings. In need of 1/2 inch balance for non-tilt metal window with shoe part 15-095 and top part 19-024. Length 19, 28 and 40 inches.
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Tom from SWISCO responded:

Sure, we can supply these balances as a custom order. Before I go any further, I need you to tell me the stamp printed on each balance, as well as how many of each size you need. Thanks!

A home owner from Mount Laurel, New Jersey says:
The stamps a hard to read and picture is added.
Actual quantities would depend how much this would cost.

19 inch balance is - f 182000HN. Would need 2.
28 inch balance is - g 273000HN. Would need 8.
40 inch balance is to my best guess - 1394000HM. Would need 6.

If they are custom would these be returnable if they don't fit?
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Tom from SWISCO responded:

Thank you! This information is perfect. I'll email you a purchase link and price quote now for the desired quantity.

Unfortunately, custom balances cannot be returned for a refund. We will be making them according to the specifications provided here; 19-024 top and 15-095 bottom, with metal channels that match the lengths and stamps provided. If you have any doubts that the information you've given us is accurate, you should check now before you place any order.

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