Steel Wheel Sliding Patio Door Roller
Used by: Andersen, Pozzi, Hurd, Peachtree, Caradco, Jeld Wen, Others
Sliding Door Tandem Roller (2-Wheel ) 
1-1/4 inch steel ball bearing roller and housing 

Dimensions: 
Thickness 11/16 inch 
Length, 4-5/8 inches 
Height 1-3/16 inches 
Screw holes spaced at 5-3/4 inches. 
Housing Tab Style: Flat Tab Housing
Material: Steel
Roller Diameter: 1-1/4-inch
Roller Edge Type: Concave
Roller Width: 5/16-inch
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Related Items: 
1-1/4 Nylon # 13090 
1-1/2 inch Nylon Wheel # 13243

Helpful Links
How to Adjust Rollers in a Sliding Door
Guide to Replacing Rollers in Andersen Sliding/Gliding Door 
Video: How to Replace Rollers in Andersen Sliding/Gliding Door