operator cover for Milgard windows installed in 1998

A quick learner from Redwood City says:
I need the operator cover for Milgard windows installed in 1998. I have about a dozen that disintegrated. Cranks work fine
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Dave Sr. from SWISCO responded:

Hello,

Your operator is not familiar to us but take a look at the 39-323 cover used with Truth casement operators. Review the dimensions below to see if it could fit your operator. If you decide to give it a try and run into any issues, our return policy can be found here. Thanks for posting. 

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