Need a new lock

Hello! Our 26-122 vent lock might be what you need. Please compare its dimensions to yours. To remove the old latch, you will have to break it. I like to place a flat putty knife behind the top flange of the latch and firmly force the top out. I know it sounds awkward, but these weren't designed to be replaced for some reason. It's annoying, but it's not difficult to pop the old ones out. Just be careful not to damage the window. To install the new latch, put the bottom in first, then snap it in at the top.