Dave Sr. from SWISCO responded:
September 17, 2015
The 90-005 doesn't usually go with keepers. Normally, it just locks into the top sash cut out. That said, service people I've known have used the 95-109 keeper, but they had to file down the bump so the tongue can slide in. I'm not sure how well that will work for your window but it may be worth considering.
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