Possible replacement part 15154.

Keeper for Sliding Patio Door
This Keeper / Strike is constructed out of Steel
This is a surface mounted keeper for a Hook style latch
It is plated in Steel
This design is used by manufacturers such as W&F
Hole Center: 2-7/8 inches
Length: 3-7/16 inches

Note: This Strike / Keeper comes in two sizes (see related parts), appear to be interchangeable
Priced each, Sold each

Contents
1 keeper
Installation screws

Related Parts: 
15114 - 5-1/2 inch length