Single Spindle version is sprung Distance Between Inner Locking: 1436mm Top Deadbolt to Spindle: 704mm Bottom Deadbolt to Spindle: 732mm Door Material: UPVC, Aluminium, Timber, Composite The Lockmaster 3 Deadbolts Double Spindle features 62mm and 92mm centres and are sprung and can only be used as a lift lever function, therefore the use of unsprung door handles can be used. Handing can be changed by reversing the latch. This lock is suitable for either timber or PVCU doors and is corrosion tested to BS EN 1670:2007 Grade 4 (240hrs. NSST).
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