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A quick learner from MI says:
February 27, 2023
84-020 will this roller replace 84-070?
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Dave Sr. from SWISCO responded:
March 1, 2023

Hello,

The 84-070 is for newer Andersen patio screen doors that have a hole at the bottom side edge of the door to adjust the height. 

The older style 84-020 has an adjustment hole on the face of the bottom rail of the screen door for adjustment. I would suggest that you purchase the exact match for your original roller to ensure that it will function properly. Thanks for posting.  
Screen Door Roller, Fits Andersen
Screen Door Roller, Fits Andersen
84-020
$6.94
Andersen Lower Patio Screen Door Roller
Andersen Lower Patio Screen Door Roller
84-070
$7.87
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