Commercial grade storeroom escape knobset.
Outside knob always rigid, outside key retracts the latch.
Inside opened by the knob at all times.
60 mm backset standard.
70 mm and 127 mm latches available separately.
Suit door thickness 32-48 mm.
Brass latch 13 mm projection.
Knobs and roses made of high purity zinc alloy.
Fire rated to 2 hours.
Finished in satin chrome.