Cal Royal AUS4015 Chelsie Collection Austin Style Grade 3 Residential Single Dummy Door Lever, Satin Nickel The exterior lever is locked by a pushbutton on the inside and unlocked by an emergency release on the outside, rotating inside lever, or closing door The product offering is designed to comply with the Americans with Disabilities Act (ADA) and to encompass all levels of ANSI classification They offer a complete line of mortise locks, exit devices, door closers, hinges and many other hardware and trim products