Difference between 55-303 and 55-301

A quick learner from Alabama says:
Will 55-303 and 55-301 interchange and secure the same window if re-glassing the entire window instead of replacing a bad piece>? If not what are the differences that don't allow---tksjg
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Tom from SWISCO responded:

The 55-303 and 55-301 are not interchangeable. The 55-301 is meant for 5/8" thick glass, while the 55-303 is meant for 3/8" thick glass.

A quick learner from Alabama says:
THANKS!!!!!!!!!!!
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