BL4305 MG PRO ECP. The Borg Locks BL4305 ECP is a marine-grade digital combination lock designed for external applications, featuring a lever-turn keypad and an inside rim-fixed deadbolt. Its black marine grade e-plating has been tested to withstand over 1,000 hours of continuous salt spray, ensuring durability in harsh weather conditions. The lock incorporates the Easicode Pro coding chamber, allowing for quick on-door code changes, and offers over 4,000 potential combinations. It is suitable for doors and gates up to 80mm thick and is designed for use on external applications, including timber, composite, and aluminium gate profiles.. Internal rim fixed deadbolt. Marine Grade black finish - 1000 hours salt spray tested. Non-handed. On door code changing - ECP (Easy Code Pro)