21-002 - How much vertical adjustment?

A quick learner from md. says:
How much vertical adjustment is there in this part. I have new carpets and need to raise doors at least 1/2 to 1 inch. I want to get new springs and clips, can this be done? Thanks.Paul
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Paul from SWISCO responded:
Thanks for posting! The 21-002 has a 1-1/2" adjustment.
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