Replacement channel for Lincoln windows

A contractor from Guilford ct says:
March 1, 2017
I have a bunch of channel balance to repleace in Lincoln double hung windows installed in 1994. Marking is 28hd. Here are some picture to help identify them.
Let me know if you need anything else

Thanks tom
User submitted photos of a window balance.
Profile picture of Paul
Paul from SWISCO responded:
March 8, 2017
It's tough to tell what you have based on these photos. Is your metal channel ribbed? If so, consider our Series 751 channel balance. This may be a good match.
29" Series 751 Channel Balance
29" Series 751 Channel Balance
S751-29
$11.73
How to install a ribbed tilt channel balance with knife lock shoe
How to install a ribbed tilt channel balance with knife lock shoe
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