538 Series – Key in Knob Locksets (Escape & Storeroom Variants)

This commercial-grade knobset is designed for storeroom applications requiring secure external access and free internal egress. Supplied with 6RP restricted keying, it integrates easily into secure keying systems.

Key Features

• Rigid exterior knob; key retracts latch
• Interior knob always operable for escape
• 70mm backset
• 15mm latch projection
• Suits door thicknesses 32–50mm
• Satin chrome finish