Andersen / Emco Replacement Mortise lock used with 3000 Series Full view Rapid 45 minute install storm door with clear or decorative glass
The 3000 series storm door is a Full View Storm Door using retainer strips to hold the glass or screen in place or Self Storing Full view with roll up screen.

Lock Application: 3000 Series Storm Door
Handed: Yes
Markings on Lock case: Tan nylon guide below latch, L or R on metal Cylinder Type: Euro Profile 
Cylinder to Handle PZ: 2-1/2 inches (63mm)
Contents: Lock Case and Screws, No Faceplate 

NOTE: Handing determined from Outside, by location of handle set: handle set on the right is Right Hand - handle set on the left is Left Hand 

Related Andersen Storm Door Parts
306026 - Compatible with the 3000 Series 45 min Easy Install, Right Hand
306029 - Compatible with the 4000 Series 45 min Easy Install, Left Hand
306028 - Compatible with the 4000 Series 45 min Easy Install, Right Hand