The Borg BL2000 series is a range of fully mechanical pushbutton coded locks. The BL2021 features a back to back keypad to provide keyless entry to authorised code holders only. With its ergonomic design and attractive finish, as well as having components treated for strength and durability, the BL2021 provides a stylish and strong security solution. Finish: Satin Chrome Non holdback Height 142mm,Width 41mm,Backset60mm Case Depth Required80mm Standard fixings suit doors up to 54mm 50,000 cycle tested Back to back keypads Non handed.