Block and tackle window balance
Thanks for posting! I am confident that we can provide you with a replacement balance, however, to be absolutely sure, I'll need to see a clearer photo of the stamp shown in your photos. It is a bit hard to make out exactly what it says.
It may help to find a balance that might have a clearer stamp on it as well.
We could not read it either. In the meantime I was able to find out what information is needed by a local company maybe this same information will help you to tell me which one I would get from your company. The metal portion without the plastic pieces on each end is exactly 22 inches long. The width is 1/2 inch the depth is 5/8 inches and the weight of the sash (window) is approximately 28 lbs. Hope this is enough information for you to identify the correct one for me. Tony
Thanks for confirming that information. I've just sent over a link with a quote for (2) of the requested balances. You may use this link to review the pricing and to place the order from your online cart.
A pair of the 21-9 stamp will carry a sash weighing 26 - 29.99lbs.
Let me know if you have any questions.