Front Door Handle, Left or Right - All Questions

Hello, this is listed as being suitable for the left or right side of a vehicle - original ones are 'handed', with this identifiable from a water drain hole from the key cylinder opening. As such, they're two different parts. Do these have holes top and bottom, admitting water as well as offering a drain? If not, then in one fitment it'll end up screwed, probably rusted to hell.