Jasmine from SWISCO responded:
April 2, 2024
Hey there, Thanks for reaching out! Your patio door roller does resemble the 81-166S Dual Roller Assembly, however to confirm that this is the right fit, you'll need to compare the dimensions below. Unfortunately, I cannot confirm this based on the photos of the measuring tape. Take a look and see what you think! Dimensions for 81-166s
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