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, it’s 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:
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3 lever mortice mechanism for reliable everyday security
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Stainless steel construction for rust resistance and longevity
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57mm backset – suitable for most standard timber doors
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Integrated latch and deadbolt in one compact unit
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SABS approved – tested to meet strict South African standards
Applications:
Perfect for bedrooms, passage doors, or office interiors where both privacy and strength are needed.