This item has been discontinued and is no longer available.
No replacement available.

Weiser old style Deadlatch
Uses Primarily with Keyed Entry locks
Latch Backset (BS): 2-3/4 inch (70mm)
Latch Bore: 7/8 inch 
Faceplate Shape: Radius Corner
Faceplate Size: 1 x 2-1/4
Faceplate Color / Finish: Satin Brass US4
NOTE:
The spring latch and dead latch are interchangeable. 
However, the purpose of the deadlatch is when the small round pin is depressed it makes the latch fixed and was designed to prevent someone from using a credit card or other thin item from opening a locked door.