"For lavatory or other privacy door.,Either knob operates latch bolt unless outside knob is locked by push-button Inside,Button automatically releases when inside knob is turned or door is closed,A coin inserted and turned in emergency slot will unlock door from outside,Inside knob is always active,Latch Plate-Iron",Suitable For Door Thickness-35-50 mm,Accessories Included-Latch, Latch Plate, Striker, Screws,3 Brass Keys,Polished Brass,75x75x59mm,60mm