Window latches

A quick learner from Maryland, USA says:
Hello. I need replacement window latches, but I cannot tell if I need 25-244 and 26-243 or 26-419 or 26-420. I cannot figure out how to ascertain the 3/8 versus 3/16.

The dimensions of the latch ar 2 5/8 and 11/16.

Thank you.
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Emily from SWISCO responded:

Hi there!

Thank you for reaching out to us. Our 26-243 & 26-244 and 26-419 & 26-420 are similar-looking tilt latches but take note of the bottom lock tooth. The 26-243 and 26-244's tooth is 3/16" back as shown in the image below. 

Alternate view of 26-243
Alternate view of 26-243

Whereas, the tooth on the 26-419 and 26-420 is 3/8" back. Compare these dimensions with yours and see what you think. 

Alternate view of 26-419
Alternate view of 26-419


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