The ASSA ABLOY SL500 offers the innovative features you've come to expect from ASSA ABLOY equipment ... faster performance, heavy duty anti-risers with multiple points of contact, and an attractive 4-1/2" deep header which is flush to the jamb to provide unparalleled aesthetics. The ASSA ABLOY SL500 is available in an array of configurations to provide powerful solutions that can be trusted in even the most demanding, high traffic environments.