Sliding Patio Door Roller With Dual 1.25 Inch Nylon Wheel Open Top Housing

One of the most common Patio door rollers for vinyl sliding doors.
Used by Milgard, Weather Shield, Keller and many others
This Sliding Patio Door Roller has two 1-1/4 inch (31.8 millimeter) diameter Steel ball bearing or Nylon rollers. 
The steel housing assembly is 11/16 inches (17.5 millimeters) wide and 1-5/16 inch (33.3 millimeters) tall. 
This unit is used by Phillips and other door manufacturers. 
There is another roller ( 13261) with a 1" tall housing that looks like this one. 

Housing Tab Style: Unique housing

Roller Diameter: 1-1/4-inch

Housing Height: 1-9/32 inch

Housing Width: 11/16 inch

Roller Edge Type: Concave

Roller Material: Nylon

Installation Screw: 1/4-20 Machine Thread

Includes one roller assembly, Sold each, priced each.

Related items: 
13261 - Keller 1 inch tall housing 
13262 - Phillips 870 Marquee with 1-5/16 tall housing