For Glass Doors From 8mm to 12mm Thick Lock Can be Used Glass-to-Wall, or Glass-to-Glass with Matching Receiver Available in chrome and brushed nickel. This CRL Glass Door Lock with Indicator is an attractive and practical way to add security and privacy wherever 8 to 12mm glass doors are used in Glass-to-Wall or 180 degree Glass-to-Glass installations. A turn of the thumbturn on the interior side of the Lock changes the colour of the exterior indicator. Emergency access is made possible by a low profile screw on the exterior face. The Lock comes with a wall mounted strike plate, screws, and anchors. Both Lock and Receiver, used for glass-to-glass installations, come with gaskets and hex wrench. Installation and glass fabrication instructions included.