Tab to prevent window from opening fully

Question

The tab that prevents the windows from opening fully is broken on a number of our B F Rich double hung windows and we would like to replace them. The photo shows the tab or locking mechanism that is broken. There are no markings on this part. Can you provide us with replacements? We would like 12 of them.

Tom · Accepted Answer

Looks like you have a vent lock, also known as a nite lock in some cases. Without dimensions I can't say what you need for sure, but start by looking at our 26-338. I think this could be a good match. You can see our entire selection here.