The Assa ML53PA/ML55PA is a high-security electronic combination lock built for thicker locker doors up to 22mm, making it the perfect upgrade for premium wooden, laminate and heavy-duty storage units. With a smooth push-button keypad, robust electronic mechanism and flexible private/public operating modes, it delivers secure, user-friendly access in even the busiest environments. Offices, leisure centres, healthcare settings and education facilities love its reliability, long battery life and low-maintenance performance. Designed for effortless retrofitting and backed by Assa’s renowned build quality, this lock offers dependable protection with a clean, modern look. A seriously strong choice for thicker-door installations.