Top sash guide
A quick learner from Seattle, Washington says:
December 21, 2012
now se need top sash guides as well! I don't see that you have this one so I am wondering if I should mail it in to you for ID?
Paul from SWISCO responded:
December 27, 2012
Thanks for posting! Take a look at our 18-008 top sash guide and compare it to your existing hardware.