Built for Strength. Designed for Security.The QS5757A is a precision-engineered 3 lever mortice lock crafted from stainless steel, combining durability with reliable locking performance. Featuring a 57mm backset and an integrated latch and deadbolt, its ideal for both residential and commercial applications.Whether you’re upgrading interior doors or fitting new security hardware, this lock provides a solid, corrosion-resistant solution. The QS5757A meets SABS standards, ensuring it performs under pressure and maintains long-term reliability.Key Features:3 lever mortice mechanism for reliable everyday securityStainless steel construction for rust resistance and longevity57mm backset suitable for most standard timber doorsIntegrated latch and deadbolt in one compact unitSABS approved tested to meet strict South African standardsApplications:Perfect for bedrooms, passage doors, or office interiors where both privacy and strength are needed.

Door Hardware >> Door Locks