28B window sash balance

Hello, thank you for posting,

We can assist with a replacement balance, but to further review, are you able to confirm the depth of the bottom shoe from the diagrams below? Please also confirm that the length of the metal channel excluding the nylon attachments is 29" long.

From there we can determine the best fit for your window. Thank you! 

Comparison of 15-004 and 15-005

Dimensions for 15-029