United Security 220-SP Steel Door Contact, 1", Black

the demonstration you were about to view was filmed in the presence of insurance professionals appraisers risk surveyors and locksmiths in order to conduct an objective reliable test we installed the Martok lock on a standard high-security steel door by a leading manufacturer above the multiple bolt lock in addition we installed a vault type lock known as a frame gripping lock under the multiple bolt lock a total of three locks the door was mounted on a special testing rig fitted with a 5 ton hydraulic jack the frame gripping lock the multiple bolt log and the Martok the attending professionals inspected the door the locks and the quality of the installation the door was then locked and we began to apply pressure popping noises you hear are the sounds of the door welds coming apart the lower bolt of the multiple volt has already been pulled out of place signs of stress are also evident