This High Security Door Lock is Aluminum Brass Finish; is a spring-loaded reinforcement lock that protects against unauthorized entry by preventing lock bumping and lock picking while in the locked position; This lock is designed to withstand 800 lbs of force and cannot be opened from the outside; Installs in just minutes using 3" hardened screws anchored to the door jamb; fits any size door; tamper resistant and child-safe design; Meets Texas Building Code requirementsFind the DOOR BLOCKER BRASS 3 at Ace.