Plate Length: 56 mm Plate Width: 15 mm features: Brighton sash fastener narrow style Fastener can be locked tight with key supplied 15mm Narrow base plates for easy fitting to modern sashes Screw down fastening for tight fit Screw arm is sprung but will not rise up and hit window pane When open the screw arm is slightly angled away from glass and therefore requires a minimum of 2 mm extra clearence for inner sash to pass Brass Available in many other finishes to order