Description SECURITY FEATURES: Commercial UL digital lock and keypad Anti-tamper re-locking device on the lock Hardened anti-drill plate surrounding the lock Internal hinges Solid steel 6mm door Solid steel 25mm bolt-work Removable key holding boards Durable quality paint finish Pre-drilled anchoring holes, 4 x 13mm diameter (2xback, 2xbase) 3mm body 425 key hooks Important: Allow 55mm projection for handle on depth measurement.