House Guard Mortise Lock with 45 Degree Key Way, Spring-Loaded Hook Latch Projection,Sliding Door Lock for Patio Door with Round Face Plate - Amazon.com
Adams Rite E2009 1/2" Wide Round End Face Plate Mortise Lock for Doors- Vertical Keyway - Walmart.com
GAS Hardware - Shop Parts Online - Adams Rite Flush Mount Handle Set – Garage and Sliding Door Hardware