9
Combine Mounting Rails together using the BT8390-EXT
i. On the intended front facing side of the mounting rail (item E1) insert 4 x joining
bars (item G1) half-way into each slot, on the back side insert 1 x joining bar into
the top slot and 1 x joining bar into the third slot (
see fig. 1
). Loosely fasten the
2 grub screws (item G2) on each joining bar fixing it to the mounting rail.
ii. Slide another mounting rail (item E1) onto the joining bars and tighten all the
grub screws, combining the rails securely.
E1
BACK
FRONT
GRUB
SCREW
JOINING
BAR
OPTIONAL: EXTENDING THE MOUNTING RAIL
G1
fig. 1
E1
E1
G1
G2
G3
FRONT
Combined Rails
