Corner keys for window screen frame.

A home owner from Newark Delaware says:
This corner key has the number 330 and below the number there is a letter "X". I'm guessing the number is the size of the corner key.
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Emily from SWISCO responded:

Hello!

Start by comparing your dimensions to our 95-105, 95-106, 95-233 and 95-254 to see if one of these matches up to your original corner. 

How to replace stamped window corner keys.
How to replace stamped window corner keys.
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