Mating part for casement window cam lock

A quick learner from Kirkland, WA says:
I have a number of PVC framed casement windows that latch with Truth 45085 handles. What I need are the mating piece (keepers?). The part attaches to the frame with one screw at the center, to the side. The part is 2 1/2" tall overall with a 1 7/8" opening for the latch. It's 3/4" wide overall and 5/8" wide at the thickest part (which is 5/8"). See the photo for measurements and context. Thanks for your help!
Thumbnail of the uploaded file named 20210816_153846 casement latch.jpg
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Bob from SWISCO responded:

I am afraid we don't have an exact match for this keeper. The lock looks like our 38-065 , which can use the 38-108 as well as the 38-108 Keepers. Look these over and see if you think you could adapt either to your window. 

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