These are left and right assemblies from a tilt window. They are just like your Series 210 except the depth is 9/16" NOT 7/8" like in your photo. All other measurements are the same.
Bob from SWISCO responded:
February 2, 2022
Thanks for posting. The Series 161 has a thickness of 9/16". Could this be what you need? Take a look and see what you think.