18 1/2" channel balances

A quick learner from Deerfield beach FLA says:
Please see attached images. I believe they match your 377 series channel balances with top 19-018 and shoe 15.005

I measures 18 1\ 2" and they are marked "1820". Please send me a link for these special orders. I need 8 in this size.

I also need 8- 24" length marked "2320". I believe these are a standard order?

Can you confirm the correct type of balance from these images?

I also need 6 keeps and 4 locks to match

I also need two sash thumb screw locks and several sash tops. Can you direct me to the correct item numbers.

Can't wait until I can get all these windows with working again.
Thanks
User submitted photos of a window balance.
Profile picture of Tom
Tom from SWISCO responded:
Sure, I'll email you a custom order link and price quote for eight 18-1/2" long Series 377 balances. The S377-24 would be standard. As for the lock, I'm not sure what you have. Can you tell me the distance between the two screw holes, center-to-center?
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