A handy person from Boston says:
Do you have any of these corners and latches LEADER is embossed on them
Thumbnail of the uploaded file named 0E192644-2950-4CAB-818C-136DC80B2EB0.jpeg
Thumbnail of the uploaded file named CBC1E040-4B49-4A8E-8DA1-6A20F00A6C07.jpeg
Profile picture of Bob
Bob from SWISCO responded:

Thanks for writing in. I'm afraid I can't match anything with this manufacturer's name in our records. These storm window parts are very old and not made anymore, thus finding replacements can be tricky. Can you provide us the thickness of the screen that uses the corner key, as well as the thickness of the legs? For the storm window latches, start by seeing if our 91-026 and 91-027 match what you need. You can view the rest of our storm window latches here.

Reply to Thread
Use this form to ask a follow-up question or to share your experience regarding this subject.
(your email address will be kept private and is only used to inform you when a response has been made)
Current wait time is 4-7 business days
We promise that one of our experts will personally get back to you as soon as they are able. Thank you very much for your patience and understanding. If your inquiry is time-sensitive, please feel free to reach us at 856-317-6263 or at