Knife latch Question

A quick learner from South Jersey says:
May 6, 2020
Hello! I am having trouble finding these latches to keep my screen in place. In the picture is the original latch (plastic) that was broken in three places. They came from windows manufactured by United Windows. Any and all help will be appreciated! Thank you!!
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Paul from SWISCO responded:
May 7, 2020

Many thanks for writing in. Plastic knife latches would be pretty unusual, as they would not last long under the UV rays from the sun. Please look and compare our two latches, the 70-172 & 70-174, to yours. 
A home owner from Maryland says:
May 13, 2020
I need to replace some of the rusty knife latches on my screens. Is there a video or a trick on how to remove the old ones? I am having trouble getting the old one out with out damaging the screen frame.
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Dave Sr. from SWISCO responded:
May 13, 2020

The trick I found was that you need to use a small flat blade screw driver so that you can sneak into the screen frame cut out and depress that "notch" or widen the cut out in the screen a little to bypass the "notch" on the clip. Try that and see if it works.
Knife Latch Pair
Knife Latch Pair
70-172
$2.10
Andersen Screen Latch, Pair
Andersen Screen Latch, Pair
70-174
$3.87
How to remove screen knife latches
How to remove screen knife latches
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