MK31TA 10 112x300 KA2 (d) KNOBLOCK DOUBLE CYL
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MK31 DOUBLE CYLINDER KNOBLOCK / COMMUNICATING (F80)
Latchbolt operated by knob either side. Key in either knob locks its own knob independently.
Latchbolt operated by knob either side. Key in either knob locks its own knob independently.