This Machinery Keyless Keypad Security Entry Door Lock features an emergency override key and is suitable for office, home, or apartment use. Please read the instructions thoroughly before use and retain the manual for future reference. Constructed with a zinc alloy integrated body, the lock is durable and corrosion-resistant. Easy to install and operates via a secure numeric code. Compatible with both left-handed and right-handed doors. Standard 2 3/8" backset. Keypad dimensions: Length: 108mm (4.25in) Width: 43mm (1.73in) Thickness: 21mm (0.83in) Back cover dimensions: Length: 108mm (4.25in) Width: 43mm (1.73in) Thickness: 17mm (0.67in) Material: Zinc alloy Color: Silver Package includes: 1 x Door lock 1 x Instruction manual Note: Lighting and display settings may cause slight color variations between the product image and the actual item. Measurement may vary by +/- 1-3 cm.