CertainTeed window tilt latch

I have several broken CertainTeed surface mounted top window tilt latches. The notch on top of the window sash measures 11/16" W x 3-1/2" Long to the end of the sash frame. The mounting holes are spaced at 2-7/8" center of hole to center of hole. The top of the latch is 13/16" W. From the inside of the house it is on the left side, but is marked with an "R". I'm guessing I should be looking from the outside. Can you help identify this part number. Thank you, Fran

Thanks for your help Casey. I'll get a couple sets.