Flat striking plates with a latch bolt guide are generally used in flush doors. Doors opening outwards usually also require latch bolt guidance.
They can be fitted to wooden door frames, aluminium blind frames, steel or even plastic frames. In line with various installation conditions a multitude of latch bolt guide striking plates are available.

Angled and rounded flat latch bolt guide striking plates with latch and dead bolt cutout.
With latch bolt guide.