Help with my screen door rollers

A quick learner from Florida says:
November 11, 2016
are the rollers the same size on top and bottom . and is the dimention inside or outside
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Paul from SWISCO responded:
November 14, 2016
Thanks for posting. The 83-001 is for both the top and bottom of the screen door. The dimensions are outside.
1" x 11/32" Corner Screen Roller Assembly, 7/8" Wheel
1" x 11/32" Corner Screen Roller Assembly, 7/8" Wheel
84-011
$4.20
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