Lockwood 531 series passage lockset, tulip knob. Commercial grade.

 Fire Rated to 2 hours.

Passage function

• Opened by knob either side at all times.

Additional info

• Commercial grade passage knobset.
• Opened by knob either side at all times.
• 60mm backset standard.
• 70mm and 127mm latches available separately.
• Suit door thickness 32-48mm.
• Brass latch 13mm projection.
• Knobs and roses made of high purity zinc alloy.
• Brass latch bolt with 13mm projection.
• Fire rated to 2 hours.
• Finished in satin chrome.

Door thickness	32-48mm
Backset	60mm
max. Lever / knob projection distance does not include turnsnib	61mm
Strike	70mm x 28.5mm x 1.2mm
Latch face plate	57mm x 25mm
Door handing	Non-handed
Rose	64mm