When morticed into the edge of a window casement, this lock will work with any of our window espag fasteners. Supplied with matching SS wood screws. Ideal for windows with a draft gasket. Forend Size: 90mm (L) x 16mm (W) Case Size: 30mm (D) x 60mm (H) x 12mm (T Backset: 23mm (25mm with faceplate) Keep Plate: 90mm (L) x 16mm (W)