28 inches long, 1/2 inch wide, markings " 27 14L ok BSI"

A quick learner from Florida says:

I am looking for replacement sash Balance for 2 Vinyl NON tilt windows.
the current balance are 28inches X 1/2inch wide.
The only marking reads: "27 14L ok BSI"

Could you suggest a replacement part?

Thank you,

A customer submitted image of their channel balance hardware.
Profile picture of Tom
Tom from SWISCO responded:
Thanks for posting. Before I can confirm what Series channel balance you have, I'll have to figure out what your bottom shoe is. Please look at the measurements for our 15-001 and 15-002 bottom shoes and note their depths. As you can see, they are 1-1/8" deep and 1" deep, respectively. Which measurement more closely resembles your own shoe?
A handy person from Florida says:
Hi Tom.

The shoe in the pic are just above 1" deep, shy of 1/16th I reckon.

Thank you.
Profile picture of Tom
Tom from SWISCO responded:
Thank you. If the shoe is over 1", then it's likely that you had our 15-001 but it was worn down over time. Take a look at our Series 390 channel balance and see if this is what you need.
A handy person from Florida says:
The sash is about 36Lbs therefore the 28inch 2760 should work right?
Profile picture of Tom
Tom from SWISCO responded:
36 pounds is pretty heavy, and two balances with the 2760 option can only support 30 through 33 pounds. Can you confirm that you meant to type 36 pounds? If so, the balance may have to be custom made.
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)