The 859 series features split spindle nightlatch operation. Type 17 refers to the 2 hook, 4 roller version of this lock with 1510mm between the outer rollers.
Operation: Lift lever or split spindle nightlatch.
Latch reversal: Undo the screw in the side of the lock case adjacent to the latch. Remove the latch, reverse, reinsert and repace the screw.
Latch reversal: Insert the split spindle 2/3 of the way in on the internal side and 1/3 of the way in on the external side
- Centres: 92mm
- Case height: 195mm
- Case depth: Backset + 18mm
- Overall length: 2170mm
- Distance between outer rollers: 1510mm
- Distance between inner rollers: 699mm
- Distance between hooks: 1015mm