The Corbin Russwin TL3700 Series of Tubular Locks has three new functions and features which dramatically improve this product.
The first new feature is the New communicating Set Functions (TL3780, TL3780A), blank rose outside, and lever retracts latch.
The next new feature is the 3-hour fire rating option for the Passage Set (TL3710A), Privacy Set (TL3720A), and Communicating Set (TL3780A).
The last new feature is the Half dummy trim which is offered in two ways, through bolted (TL3750) and surface mounted (TL3750S).
As with all of Corbin Russwin products you can expect a great design. Check it out you will not be disappointed.