K A2750 sash balancer

Before we get to the ordering portion of this discussion, let's begin with the part in question. May we see a photo of the balance? I am afraid the number you have provided to us will not help us in the identification of a replacement. That number only indicates the strength of the spring of the balance. Once we see what the entire balance looks like, we will have a better idea on what to suggest.

Thank you. I would start by looking at our S390-28 channel balance. This comes with the 19-002 top and 15-001 bottom nylon attachments, so as long as they match up this should work great as a replacement. For the stamp option, go with 2750 when prompted.