Need the other side for this window lock

Hello there! Thank you for reaching out to us. Unfortunately, we do not sell a replacement or alternative for this lock. I'm afraid we aren't sure who might other than the original manufacturer, whoever they may be. I am very sorry for the inconvenience. 

We can't help with something like this, regrettably.  All of the hardware we sell are meant to be used as replacements for very specific, previously existing parts. They're not meant for new applications like you describe.

That's not to say that you can't use our products, but we can't exactly make a recommendation for you. At this point, I think your best option would be to contact a local professional to see if they could adapt something to work. I am very sorry that we won't be able to assist with this repair but please let us know if you have any other hardware questions.