Unique 27-E-50 Channel Balance

A quick learner from Spring hill, florida says:
March 22, 2012
The block pulley broke on my channel balance. There is an ink stamp "(09/2)UNIQUE 27-E-50" on the back. The bar measures 28 inches long, is 9/16th wide, and is the plain design. Is the 770 28" Plain the correct bar to order?
User submitted picture of channel balance unique 27-E-50.
Profile picture of Donna
Donna from SWISCO responded:
March 27, 2012
Hi, Thanks for posting with images.
This does look like the 28" Series 770 balance. Please remove the window sash and place it on a scale. We need the weight of the window sash in pounds to determine the proper stamp option.
Reply to Thread
Use this form to ask a follow-up question or to share your experience regarding this subject.
(your email address will be kept private and is only used to inform you when a response has been made)
Current wait time is 4-7 business days
We promise that one of our experts will personally get back to you as soon as they are able. Thank you very much for your patience and understanding. If your inquiry is time-sensitive, please feel free to reach us at 856-317-6263 or at help@swisco.com.