Screen latch

A home owner from Broomfield, Colorado says:
Im looking for window screen latches that old screen in at bottom. these are for Pella windows, maybe 35 years old, about an inch square.
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Bob from SWISCO responded:

See our 70-218 or 70-143P. See if one of these match what you need.

70-218 : Pella Knife Latch, Non-handed
Pella Knife Latch, Non-handed
70-143P : Pella Screen Latch Pair
Pella Screen Latch Pair
How to remove screen knife latches
How to remove screen knife latches
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