Marvin Window block and tackle replacement

A home owner from Buffalo says:
Attached picture is for a Marvin #232023 window 23X26 size. I have one replacement part with a 22H on it. It measures 23" end to end just the metal part. I need three more units with the clips for the top and the black piece that runs inside the channel connected to the rope that window clip fits in.
User submitted a photo of a window balance.
Profile picture of Paul
Paul from SWISCO responded:
Check out our Series 751 balance, this looks like a match.
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