The Pinnacle Block & Tackle Balance System uses a pawl locking feature designed to eliminate dependence on specific pocket geometry for the balance to lock properly. The design allows for a direct pivot bar interlock with the steel channel, which the company reports aids in achieving a higher load rating, provides more manufacturing tolerance, requires less space inside the jamb pocket and alleviates the need for multiple t-lock variations. It can be installed with a twist and turn in or out of the jamb.