The Master Lock No. 503YLW Latch Tight Group Lockout Box, yellow, accepts 14 padlocks or lockout hasps and can be mounted to the wall or carried from job to job. Lock box holds hundreds of keys and includes organized storage for 12 keys in back of box. Also features an exclusive, patented Latch Tight locking mechanism that prevents keys from being accessed until the last padlock or hasp is removed from the box.