Window balances

A distributor from Milwaukee says:

On Wed, 8 Jun at 10:42 AM , Dan.gould wrote:
Customer is looking for these parts and gave us numbers. He also sent a picture which I can send to you. Customer says: The attachment shows what the balances look like, the only part numbers that are stamped on them 22B MH BSI, 28D BSI AX. Also looking for window stops parts as well Thanks, Dan

I'm told the window mfr is Thermal industries DH 900
User submitted image of their window hardware.
Profile picture of Paul
Paul from SWISCO responded:
Hello! The top tilt latches look like our 26-439. Carefully compare them to your own to confirm. I can't get a good look at your balances, but they look like our Series 770 channel balance. Let me know what you think.
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