Make your hollow metal and wood doors burglar-proof with the Adams Rite MS1850SN deadlock. These units utilize a stainless steel hook bolt that is activated by a pivot mechanism to deliver maximum security for hollow metal or wood doors. Each unit is designed for ease of installation for doors based on the American National Standards Institute (ANSI) specifications. The sturdy locking action ensures that any forced attempts to pry the door will be defeated. Contact us at 516-812-0917 to order your MS1850SN Series deadlock.