Rollers for Wasco Patio Door

A home owner from 65680 says:
September 6, 2020
In looking at all of the rollers I have become more confused than before I started. I guess its between 81-018 and 81-182. I beleive my rollers are 1 1/2 so that would lead to 81-182. Would like your thoughts, I am also thinking of adding the replace roller guide or channel. If so how will that impact the door installation?
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Bob from SWISCO responded:
September 10, 2020

If the wheels are 1-1/2" in diameter, and the dimensions listed otherwise match, then the 81-182 makes sense to me. Note however that the 81-018 can be adjusted to make up for that diameter difference. 
Sliding Patio Glass Door Tandem Roller
Sliding Patio Glass Door Tandem Roller
81-018
$8.70
SS Patio Door Tandem Roller, 1-1/2" Concave
SS Patio Door Tandem Roller, 1-1/2" Concave
81-182
$42.97
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