replacement patio door roller

A contractor from Missouri says:
It seems that roller 81-030 all measurements match except we measure roller to be 1" not 1 1/4". We can send a picture.Please advise. Thanks Gail
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Mike from SWISCO responded:
You may want to take a look at the 81-138 Patio Glass Door Tandem Roller. It is similar the the 81-030, but it has 1 1/8" wheels.
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