Electronic Lockset Keypad Lever Set with the Helios Lever in the Satin Nickel finish. Supplied with a standard 2-3/8" backset latch. Email the supplier at order placement if a 2-3/4" backset latch is needed. Fits a standard door thickness of 1-3/4". If the door is thicker - please contact the supplier at time of order placement. Complete set includes latch, strike plate and a 9 volt battery. More information can be found on the manufacturer's website - Emtek.com Electronic Lockset Keypad Lever Set with the Helios Lever in the Satin Nickel finish. Fits a standard door prep of 2 1/8" bore (hole). Supplied with a standard 2 3/8" backset latch. Email the supplier at order placement if a 2 3/4" backset latch is needed. Fits a standard door thickness of 1 3/4". If the door is thinner or thicker - please contact the supplier at time of order placement. Door HANDING is needed - please contact supplier at time of order placement. Stand outside facing the door. If the hinges are on the RIGHT it is a RH door. If the hinges are on the LEFT it is a LH door. Complete set includes latch, strike plate and a 9 volt battery. More information can be found on the manufacturer's website - Emtek.com