window lock inquiry

Hello,

It doesn't look like your window has any original sash locks based on your photos. If these windows were installed without locks originally, unfortunately, we won't be able to determine what would work best since we specialize in replacement hardware. 

With that being said, you are welcome to look through our selection of replacement options here. I'm sorry that we won't be able to offer more assistance with this repair but please let us know if you have any other hardware questions. Thanks for posting.