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2
Combine 2 mounting rails together using the BT8390-EXT
i. On the intended front facing side of the mounting rail (part E1) insert 4 x joining
bars (part F1) half-way into each slot, on the back side insert 1 joining bar into
the top slot and 1 bar into the third slot. Loosley fasten the 2 grub screws
(part F2) on each joining bar fixing it to the mounting rail.
ii. Slide another mounting rail (part E1) onto the joining bars
and tighten all the grub screws, combining the rails securely.
Repeat this procedure for the other 4 rails.
F1
E1
3
Insert sliding nuts
On the back side of each of the combined mounting rails, insert the M8 sliding
nuts (part D2) in either end, 3 in the bottom slot and 3 in the second from top slot.
1 x M8 sliding nut in each slot should be positioned near the centre of the
rail, the remaining 4 near the end of rail.
E1
10
E1
F2
D2
F3
BACK
E1
E1
F1
D2
E1
BACK
F3
3 x Combined Rails
E1
D2
GRUB
SCREW
JOINING
BAR
FRONT
D2
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