General description The Yale PM444 series security door bolts are designed for concealed (mortice) installation into doors, providing enhanced security. The bolt extends into the door frame to prevent unauthorized opening. Operated with the supplied key, these bolts offer added protection for your home. The set includes two white-finished security bolts and one key, making it suitable for securing multiple doors or double doors. Technical specifications Finish: White Type: Security bolt Guarantee: 2 years Pack: Pack of two bolts with one key MPN: YALP2PM444WE EAN: 5010608244459 Compatibility and accessories Designed for standard doors requiring mortice installation Supplied with 1 key for operation Installation Concealed (mortice) installation into the door Requires proper mortice preparation for fitting Usage Operate with the supplied key to lock or unlock the bolt Provides additional security by preventing door opening from outside Other information