Rollers for a 17 years old sliding patio door

A quick learner from West Palm Beach, FL says:
I went to Home Depot as well as Lowe's and I couldn't find the item.. is this model still on your catalog???
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Emily from SWISCO responded:

Hi there!

Start by taking a look at our 81-046, 81-057, 81-257 and 81-289 rollers. Carefully look over the dimensions for each and see if any match up to your original roller assembly. 

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