The SARGENT 11 Line goes above and beyond other Grade 1 bored locks with its unique T-Zone construction. Far exceeding industry standards, this lock provides unequalled strength and durability for the most demanding applications such as schools and hospitals. The design also simplifies facility maintenance by using one lock body for all functions, therefore requiring fewer inventoried parts. And the 11 Line offers easy cylinder change outs to incorporate various SARGENT key systems or most competitive LFIC systems, thus improving operation efficiencies by maintaining fewer key systems. Flexible, durable, reliable – this lock can take whatever you give it.