Aluminum Door Deadlatches Satin Aluminum Clear Anodized

4530 Standard Duty Deadlatch, Flat Faceplate, 1-1/8'' Backset, RH or LHR, Mortised 4902 2-5/8'' Strike, Flat Strike Shape, Standard Jamb Lip Length, Satin Aluminum Clear AnodizedDesigned to retrofit into the prep of older MS1850 Deadlocks and 4250 Deadlatches.The 4530 Standard Duty Deadlatch offers flexibility of traffic control during and after business hours. A reverse turn of the key while the bolt is held retracted retains the bolt to allow two-way traffic for hospitals, banks, stores, and other buildings which require free entrance at certain times and exit-only at other times.