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81-138B Adjustable Tandem Roller, 1-1/8" Concave

Could you please help me identify the rollers I need to replace old ones for my sliding glass patio door It's 4 inches long with steel wheels

The measurements: 3-1/8” housing length 11/16” housing width 1-1/8” wheel diameter Atrium 311/312 patio door manufactured 10/1/2020

I need a new set of wheels. Can't find at any big box. Lowe’s said to try you.

Need to know which wheels I need to order

I am looking for the replacement rollers for our sliding patio door.

Mechanism without rollers is 3 1/6 long x 3/4 depth x 1 1/4 wide. Steels rollers 1 7/8