It is a form of lever tumbler lock for unlocking a door during emergency conditions. The mechanism consists of a spring-loaded metal bar fixed horizontally to the inside of an outward-opening door. When the lever is either pushed or D-pressed, it activates a mechanism which unlatches the door allowing occupants to move quickly from that building.
Member Since 18 Years
Nature of Business Retailer
For Buyer 
For Seller 
Help 
Mayapuri, Delhi