Papaiz #323 Slimline Mortise Lock Body, 7/8" Backset - Choose Finish

Part Number: 301025
Price: $39.95
Papaiz #323 Mortise Lock

Markings: 323 on Faceplate
Backset (Edge of Faceplate to Center of Handle): 7/8" (22mm)
Handle PZ (Center of Handle to Center of Key/Cylinder): 2-13/16" (77mm)
Faceplate Width: 13/16" 
Faceplate Finish Options: Polished Brass, Polished Chrome, Satin Chrome, Black

Includes keeper / striker plate

Please note: Papaiz made a lock that had #322 stamped into the faceplate; it is discontinued. This lockset CAN be used to replace it, however, the width of the 322 lockcase faceplate was 3/4" -- 1/16" less wide than the 323 (this one). Depending on the thickness of your storm door, you may need to file the faceplate of the 323 down to make it fit correctly. 

How to Replace or Change Out a Mortise Lock