Vinyl window replacement latches

The window tilt latches are around 18 years old. There are no markings on the windows. I will need quite a few sets of the latches . The latch is a slide in that's 2 3/4 in. Long 5/8 in. Width 1/2 in. Deep . The latch point is 1/4 in. total length . The top spring latch is 1 1/4 in. long . The lside of the latch has 2 little guides for it to slide it into the window frame . The bottom of the latch is open and has a pusher and spring and a hollowed out sliding latch. Bill