Hoppe 2 Point Sliding Door Lock Strike - U-Channel. This is the only u-rail strike plate for a 2 hook sliding door, the rest are flat.

This Hoppe strike plate is for the New Style of Sliding 2 Point Door Lock.

Face plate Width: 7/8 inch (24 mm)
Face plate Length: 30 inch (732 mm)
Face plate overall thickness: .72 inch (18.2 mm)

Brushed Stainless Steel, 4 Standard + 3 Adjustable U-Rail Faceplate

Priced and Sold Each.