Lockwood 355 Deadlock

• A strong interlocking turn knob case and mounting plate to resist jemmy attack
• Concealed fixing
• Positive deadlocking action
• Locked either by key from outside or by internal turn when free
• Body dimensions 121mm (W) x 76mm (H) x 56mm (T)
• Thick walled, high purity, zinc alloy case
• 60mm backset
• Solid steel bolt and solid steel boot leg
• Suitable for door thickness of 30mm - 45mm
• 5 pin cylinders on the Keyline LW5 profile