Tom from SWISCO responded:
April 18, 2014
Did you compare the 81-018 and 81-149 to your own rollers yet? If so, how did the dimensions and style match what we show for each part? That is the best way to determine if these will work for you. For a door that is 17 years old, it's better to double check these things instead of just going off of what the manufacturer says. You never know if any repairs have been made over the years.
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