Thanks for writing in! Your channel balance looks like it could be the Series 751 channel balance with the 15-233 Great Lakes, Blue Locking Terminal. See the dimensions and design for the shoe below.
There are also a few other details you'll need to confirm as well. To start, please confirm the length of your metal channel as well as the weight of your window. Unfortunately, we are unable to cross-reference the stamp from your balance to determine the one you'll need to for the new balances.
These will need to be a custom/special order balance. Given that custom balances are non-refundable and non-returnable, so it will be important to confirm these details before I am able to provide you with an order link. Keep in mind there is an order minimum of (2) balances per custom order. If you are in search of a higher quantity, please confirm the number of balances you intend to purchase.
Thanks for confirming this information. I've forwarded over a separate order link with a quote for the (4) requested balances. You'll be able to use this link to review the pricing and to place your order. Be sure to check your/spam junk folder for the email.
Please feel free to reach out with any questions.