Vent locks for casement window

A home owner from MI says:
June 4, 2018
Hi
I have vinyl double hung casement windows that apparently used to have original vent locks, many of which are missing. I'd like to order replacements, are the sizes fairly standard or do i need to measure each window?

Also, the placement of these vent locks allow the window to open only about 2 inches. If I want to be able to leave them open 4-5 inches do you sell/recommend a different kind of vent lock i can use?

thank you!
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Paul from SWISCO responded:
June 11, 2018

I'm afraid nothing is standard when it comes to windows. In my experience, it's always a good idea to double check just in case. You never know when you may have something weird. If you can show us pictures of your original vent locks, and tell me the size of the openings, we may be able to find a good match.
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$1.97
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