Screen Latches on Milgard Sliding Door

I have Milgard sliding doors. The screen latches (double sided) need to be replaced. They are black with a recessed square centrally and there are two screws. Can these be ordered from you? Distance between two Philips head screws is 2.5 inches; width 2.0 inches; height 3.75 inches; 4/8 inch thick. I attempted to send picture that wouldn't transmit. The item is two mirror image pieces attached one on either side of the screen flush with edge held together by the two screws.