Channel Balancers

A home owner from USA says:
I need your help please. I used your website to try to order 2 balancers but am having difficulty.
The metal channel is 20 5/8 inches long, the shoe adds another 1/2 inch in length. It looks like your 385 matches except it will be shorter if I order a 20. Mine is stamped 20 4. The 1 3/32 width of the shoe is correct as is the 1/2 inch size of rail, the s385 top is correct, just concerned about the length, l am sending photos in my next email
User submitted photos of a window balance.
Profile picture of Tom
Tom from SWISCO responded:
Thank you for your patience in this matter. This is actually not a Series 385, but a special kind of balance that will need to be custom made. I will send you a link for a unique part that you can add to your cart.
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