MA- Series Grade 1 mortise lever and knob locks. Deadbolt locks provide an extra measure of protection against break-in when used as a supplement to an existing lockset. In applications ranging from military and government projects to multi-family housing retail and restaurants Falcon deadbolts deliver superior performance and the flexibility of multiple keying systems. Our full line of Grade 1 and 2 auxiliary locks feature interchangeable cores that are compatible with SFIC products from other manufacturers and they're backed by Allegion. ANSI/BHMA Meets ANSI/ BHMA 156.13 Series 1000 UL 3 hour A label. Entry/Office Lock function description Latch bolt operated by knob/lever from either side except when outside knob/lever is made inoperative by buttons in face. When outside knob/lever is locked latch bolt is retracted by key from outside or by operating inside knob/ lever. Auxiliary dead latch. Inside knob/lever is always free for immediate egress.