The additional deadbolt provides a second, independent lock on modified 856 or 859 Door Locks, increasing security for the end user. The modified locks have a slot in the faceplate to allow the bolt to be thrown and locate in an additional hook plate.
The lock fits above the handle at a comfortable height for ease of use. It can be operated internally by key or thumb turn, and locked externally by key. Alternatively a half cylinder can be used for internal or external locking depending upon the security requirements of the end user.
Please note that these product properties are not a replacement for the manufacturer's literature and it is always recommended that Carl F Groupco is consulted before specifying.
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| Uniclass (?) | Pr_30_36_08 Bolting , latching and locking hardware | |