Andersen Hinged Patio Door Lock cylinder with two keys for an Andersen Frenchwood Hinged Door.

Lock Cylinders are available in three Finishes; Bright Brass, Chrome & Oil Rubbed Bronze
2579639 - Antique Brass has been Discontinued. 
Choose one of these for appropriate trim finish. 
Schlage SC-4, 6 pin keyway is the only keyway available. 
Keys: 2 keys with Andersen Logo 

Measurements:
Length: 1-3/8 inch
Height: 1 inch
Diameter: 5/8 inch 

Related Andersen Parts:
2579499 - Keyed Cylinder with Brass Lock Housing
2579542 - Lock Actuator
2579637 - Keyed Cylinder, Brass
2579389 - Keyed Cylinder, Oil Rubbed Bronze  

 

Andersen's Manufacturer's Guide to Exterior Keyed Cylinders: PDF