aluminum window ridged spline/ beading

A handy person from lakewood, co says:
Windows are from 1965, this is hard plastic, grey, total height, 9/16.
3/8 wide from window groove to edge.
1/8" snap in loop.
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Paul from SWISCO responded:

Hello,

We believe you need our 55-007-6 snap-in glazing. Please compare the dimensions of our glazing to yours to confirm. Thank you!

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