Window latch swisco 5.139.291

Thanks for posting. That isn't one of our product codes, it's actually an older manufacturer code that appears on a number of different tilt latches. It commonly appears on the 26-243 and 26-244, as well as the 26-390 and 26-391. One of these pairs might be what you need, but I can't be sure. Compare with your old tilt latches and let me know if one set matches what you need.