Glass DR Mortise Latch

Glass Door Mortise Lock, With Adapter For Sliding Patio Doors, Mortise Installation, Steel Housing & Hook with Round End Faceplate, Keyway Is At 45 Degree When Hook is Fully Extended, Hook Projection is Adjustable, Adaptor Faceplate Allows For Use On Wood & Vinyl Patio Doors, Screw Holes Are 4-5/8" Apart.